Journal of Materials Chemistry C
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2019
·Vol. 7
·期 33
·10247-10256
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IF 6.641
Wei-Hsiang Chen,Linlin Qiu,Pengyun Zhang,Pei-Cheng Jiang,Pingfan Du,Lixin Song,Jie Xiong,Frank Ko
To significantly increase the applicability of inverted-planar flexible perovskite solar cells (PSCs), the achievement of high electrical conductivity, excellent moisture resistance and reproducibility of a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer with simple fabrication (low cost and ease of mass manufacture) during spin-coating is the goal pursued by researchers. Herein, for the first time, we propose a facile strategy of cryo-controlled quasi-congealing spin-coating to improve the PEDOT:PSS quality to a new extent. The congealed surface and strengthened hydrogen-bonds between solvent and PSS chains can effectively suppress the moisture corrosion during spin-coating. In addition, the electrical conductivity of PEDOT:PSS can be further enhanced owing to the uniformity of PEDOT:PSS grains and a greater co-solvent effect facilitated by induced Young's modulus during spin-coating. A considerably smooth and uniform film with improved conductivity can be achieved even when fabricated in a high humidity environment. Furthermore, this smooth and passivated PEDOT:PSS can facilitate highly crystalline perovskite and better interfacial contact between them, which not only enhances the efficiency, but also greatly improves repeated mechanical deformation stability of PSCs. As a result, the power conversion efficiency (PCE) of rigid and flexible PSCs can be improved to 17.65% and 15.13%, respectively. Both devices show about 14% enhancement in PCE compared to the conventional one.
研究领域:
材料科学
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能源技术
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纳米技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2024
·Vol. 35
·期 10
·1-13
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IF 2.8
Ge Rui,Shi Bin,Liu Xiaobo,Yin Bing
With the development of the internet of things technology, sensors have played an important role in aerospace, industry, agriculture, medical and other fields. Especially in the aspect of wearable respiratory monitoring, real-time monitoring of multiple respiratory physiological parameters through intelligent sensors enable people to achieve early prevention and timely diagnosis of respiratory diseases. However, most of the humidity sensors have the disadvantages of poor permeability, long response time and narrow detection range. Therefore, this paper introduced a flexible humidity sensor with a wide detection range and fast response time for respiratory monitoring. The sensor used PEDOT:PSS-GO composite material as humidity sensitive material. Due to the addition of GO, the sensor had a wide linear detection range of humidity (35–80%RH) and a short response/recovery time (0.53/0.8 s). Moreover, the sensor used the micromesh structure of PI as the substrate, which had better flexibility and permeability and the sensor was easy to attach to complex surfaces such as masks or human skin. Based on these excellent sensing characteristics, the humidity sensor was connected with a miniature wireless communication component for human respiratory detection. The humidity sensor can clearly show the difference between normal and abnormal respiratory signals and this provided a new idea for the intelligent healthcare technology.
研究领域:
传感器
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可穿戴技术
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医疗保健
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材料科学
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物联网
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高影响因子
ACS Applied Materials & Interfaces
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2020
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IF 8.758
Ruiting Fan,Li Song,Yongsheng Hu,Xiaoyang Guo,Xingyuan Liu,Lishuang Wang,Chong Geng,Shu Xu,Yonghui Zhang,Zihui Zhang,Nannan Luan,Wengang Bi
Properties of the underlying hole transport layer (HTL) in perovskite light-emitting devices (PeLEDs) play a critical role in determining the optoelectronic performance through influencing both the charge transport and the quality of the active perovskite emission layer (EML). This work focuses on manipulating the carrier transport behavior and obtaining a high-quality EML film by tailoring the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) HTL with previously unused amino alcohol 3-amino-1-propanol (3AP). The modified PEDOT:PSS rendered a deeper work function that is more suitable for the hole injection from the HTL to EML. More importantly, the 3AP-modified PEDOT:PSS film can induce a low-dimensional perovskite phase that can passivate the defects in the EML, resulting in a significantly improved light emission. Such ameliorations consequently result in a dramatical enhancement in performance of PeLED with a low turn-on voltage of 2.54 V, a maximum luminance of 23033 cd/m2, a highest current efficiency of 29.38 cd/A, a corresponding maximum external quantum efficiency of 9.4%, and a prolonged lifetime of 6.1 h at a proper Cs/Pb ratio.
研究领域:
材料科学
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光电化学
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DOI
高影响因子
Laser & Photonics Reviews
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2025
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IF 10
Zhuang-zhuang Zhou,Meng-meng Li,Ning Wei,Zheng Sun,Xi-lin Li,Hao Liu,Jian-gen Wu,Hong Xia
Conductive polymer poly(3, 4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) has important applications in multiple fields of optoelectronics. Combining micronano fabrication methods, high-resolution PEDOT:PSS patterns can be obtained, but doping with photosensitive resins as a main method often compromises intrinsic properties, especially conductivity. Therefore, creating high-conductivity and super-resolution PEDOT:PSS patterns without relying on doped photoresists remains crucial. In this study, a femtosecond laser-induced dissociation and reconstruction (FLIDR) is utilized to fabricate PEDOT:PSS patterns with conductivity up to 851 S cm −1 and the highest resolution reported to date less than 400 nm. Additionally, 3D spatial micropatterns of PEDOT:PSS are achieved without the use of photopolymer resins for the first time. The electromagnetic interference (EMI) shielding performance of PEDOT:PSS obtained through FLIDR is evaluated, indicating an efficient EMI shielding effectiveness of 65.5 dB at a thickness of just 0.045 mm and an exceptional specific shielding effectiveness of 1455.6 dB mm −1 . Meanwhile, the high-resolution PEDOT:PSS patterns are used to develop an all-solid-state electrochromic (EC) device with an ultrafast response of less than 0.4 s and excellent stability. Further, the EC device is also utilized in multi-level covert anti-counterfeiting.
研究领域:
材料科学
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光学工程
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电子工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Xuan-Chen Liu,Lu-Yao Tian,Ze-Long Bao,Yi-Song Zhang,Peng-Fei Qian,Wen-Hao Geng,Di Zhang,Qingxia Zhu,Hong-Zhang Geng
Nowadays, flexible multifunctional composites are attracting much attention and are practically being used in various emerging electronic devices. However, most composites suffer from the disadvantages of high loadings of conductive fillers, complicated preparation processes, and low energy conversion efficiency. In this article, Caffeic acid-modified multiwalled carbon nanotubes (C-MWCNTs)/poly(3,4-ethylene dioxythiophene):polystyrene sulfonic acid (PEDOT:PSS)/polyimide (PI) composite films (CPFs) were prepared using a simple layer-by-layer deposition method. The “reinforced concrete” structure of the C-MWCNTs/PEDOT:PSS layer ensures high electrical conductivity of the film, while the PI layer provides excellent mechanical properties (72.69 MPa). The composite film exhibits excellent electrothermal response and thermal stability up to approximately 125 °C at 5 V. In addition, the good conductivity of the film provides its electromagnetic shielding effectiveness (32.69 dB). With these advantages, we expect that flexible CPFs will be widely utilized in wearable devices, electromagnetic interference (EMI) shielding applications, and thermal management of personal or electronic devices.
研究领域:
材料科学
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电子工程
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Xinyi Zhou,Siyu Fang,Luoyan Lin,Hao Feng,Tianyu Li,Lu Fang
Heparin is vital in treating thrombotic disorders; it works well as an anticoagulant coating on biomedical devices. Due to its pharmacological nature, excessive heparin can lead to thrombocytopenia, hemorrhage, and hyperkalemia, while too little may cause thrombi. Precise measurement of heparin concentration is essential for clinical practice; therefore, this study developed a heparin sensor utilizing Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) PEDOT:PSS/gold nanoparticle (AuNPs) nanocomposites. Heparin quantification is achieved via the specific protamine-heparin interaction, with protamine immobilized on the electrode surface. We systematically optimized the deposition conditions of PEDOT:PSS/AuNPs and the concentration of protamine and its incubation time. Following this optimization, the sensor's performance was evaluated using cyclic voltammetry (CV) in a 0.5 mM [Fe(CN)₆] 3−/4- solution over a voltage range spanning from −0.3 V to 0.7 V. The GCE/PEDOT:PSS/AuNPs/PRTM sensor achieved a heparin sensitivity of 8.113 μA·mM −1 ·cm −2 , a low detection limit of 0.05 μM, and a wide linear detection range of 0-35 μM. Under simulated physiological conditions (2.5 % human serum - containing buffer), the system exhibited a linear response to heparin (0–35 μM) and achieved recovery rates of 95.2 %–101.5 %, confirming its anti-interference capability in biological environments. The sensor demonstrated rapid response, high selectivity, wide linear range, and robust reliability, thus enabling its potential as a POCT device for real-time heparin monitoring in blood.
研究领域:
分析化学
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纳米技术
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生物医学工程
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电化学
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临床诊断
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DOI
高影响因子
Journal of Materials Chemistry A
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2023
·Vol. 11
·期 13
·7246-7255
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IF 11.9
Pengju Guo,Jun Dong,Cunyun Xu,Yanqing Yao,Jiayu You,Hongyu Bian,Wenqi Zeng,Guangdong Zhou,Xiaofeng He,Meng Wang,Xianju Zhou,Min Wang,Qunliang Song
Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is widely used as a hole transport layer (HTL) in inverted perovskite solar cells (PSCs) because of its excellent hole transport capability and simple preparation process. According to theoretical studies, a thinner PEDOT:PSS HTL allows more incident light to enter the perovskite layer. However, the PEDOT:PSS HTL prepared by the traditional deposition process has some limitations, such as the thick HTL, abundant defects at the PEDOT:PSS/perovskite interface, etc. Is there a preparation process that can achieve the thinning and modification of the PEDOT:PSS HTL in one-step process at the same time? In this work, inspired by the semiconductor etching process, an eco-friendly solvent etching technique is applied during the spin-coating process to fabricate an ultrathin PEDOT:PSS HTL and simultaneously introduce a green passivator (polyethylene glycol, PEG) as the bridge molecule on the HTL upper surface. In this process, the green PEG aqueous etchant can etch the excess bulk PEDOT:PSS away to form an ultrathin PEDOT:PSS HTL with PEG molecules and rich PEDOT domains remained on its surface (PEG-PEDOT:PSS HTL). This well-designed HTL is successfully thinned to enhance its light transmission and can be better matched with the Sn–Pb perovskite layer. As a result, the power conversion efficiency of Sn–Pb PSCs using the PEG-PEDOT:PSS HTL is improved from 20.52% of the reference to 21.58%, and the stability of Sn–Pb PSCs is dramatically enhanced as well.
研究领域:
材料科学
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能源技术
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纳米技术
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DOI
高影响因子
OPTICAL MATERIALS
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2021
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IF 3.08
Xueqin Wang,Jinguo Jiang,Qingqing Zhang,Zhongchen Bai
The Ag/PPy@PEDOT:PSS film was used as a Surface-enhanced Raman scattering (SERs) substrate to directly detect the low concentration of sodium formaldehyde sulfoxylate (SFDS) molecules in solution. We prepared the PPy@PEDOT:PSS film by electrochemical potentiostatic (ECP) method and then directly grew Ag nanoparticles on its surface to prepare the SERs substrate of Ag/PPy@PEDOT:PSS film. The results showed that with the increase of depositional time of Ag nanoparticles, accordingly, the size and density of Ag nanoparticles could be increased on the film surface, and their SERs effect was also enhanced gradually; this SERs substrate could sensitively detect the SFDS molecules in aqueous solution. Moreover, the minimum detection limit was up to 1 ng/mL. This preparing and detecting method of SERs substrates provides a new way for the preparation of high sensitivity SERs substrate and for direct and rapid detection of low concentration of SFDS molecules in food and drug.
研究领域:
材料科学
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分析化学
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食品安全检测
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产品关联
DOI
高影响因子
Surfaces and Interfaces
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2023
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IF 6.2
Guodong Liu,Zhongming Song,Xiuan Gao,Yinfeng Wang,Zhijian Li
Paper, a low-cost and eco-friendly substrate, can be used to prepare flexible electronic devices by resorting to surface modification technology. In this study, we investigated the surface modification of paper substrates, including those that were uncoated or coated with traditional mineral coatings , to analyze the enhancements to surface flatness and water resistance using a UV curing varnish layer. Furthermore, we explored the formation of perovskite films on the surface-modified paper substrates utilizing a PEO-doped perovskite precursor solution in ambient air, and the surface morphology , crystallinity , photoluminescence properties, and absorption properties of the prepared perovskite films were discussed accordingly. Considering the nontransparent feature of paper-based substrates, the inverted perovskite light-emitting device was finally assembled by transfer printing a transparent PEDOT:PSS layer as a top electrode. The conductive and optical properties of the electrode layer were thus analyzed as well. It is found that the surface modification of paper substrates via printing the UV curing varnish can illustrate significant improvements, such as pore-filling on the surface, a more than 10-fold reduction in roughness, and downward penetration. Moreover, prepared perovskite films on the surface-modified coated paper exhibit superior enhancements, including photoluminescence, higher crystallinity, and surface roughness and porosity. Devices fabricated on the surface-modified substrates are less susceptible to short-circuiting. The electroluminescence on the surface-modified coated paper substrate is 2.16 times higher than the prepared device on the surface-modified base paper substrate and even 3.23 times higher than on the PET substrate. Therefore, it is quite feasible to fabricate a perovskite light-emitting device on the modified surface of a paper substrate by using a printed UV curing varnish layer, which is expected to be a promising coating to polish the paper surface in the preparation of electroluminescent devices.
研究领域:
材料科学
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光电技术
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表面工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2019
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IF 5.155
Tao Wang,Li-Chao Jing,Qingxia Zhu,Anita Sagadevan Ethiraj,Ying Tian,Hui Zhao,Xiao-Tong Yuan,Jian-Gong Wen,Lin-Kuo Li,Hong-Zhang Geng
High performance, flexible transparent conductive films with a structure similar to that of reinforced concrete and constructed by sandwiching single-walled carbon nanotubes (SWCNT) between poly (3,4-ethylene dioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) and polydopamine functionalized reduced graphene oxide (PDA-RGO) were fabricated using simple spray coating. Mussel-inspired polydopamine was introduced as a graphene oxide reducing agent and modifier; the obtained PDA-RGO improved the interfacial adhesion between the conductive coating layers and substrate, and an effective post fabrication treatment method was performed on the hybrid film to achieve better conductivity. It was found that the resulting electrode exhibited a low sheet resistance of 52.2 Ω/sq. with a high optical transmittance of 88.7% at 550 nm. Moreover, the transparent film exhibited long-term stability with a relatively low roughness (ca. 2.41 nm), and its architectural structure sustained the flexibility of the film during bending. The organic light emitting diodes which using PDA-RGO/SWCNT/PEDOT:PSS film as anode was successfully fabricated, the luminance of the device was 2032 cd/cm 2 at 15 V and the maximum current efficiency was 2.13 cd/A at 14 V, indicating the strong potential of this type of transparent electrode for flexible electroluminescent devices.
研究领域:
材料科学
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纳米技术
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光学工程
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产品关联
DOI
高影响因子
Materials Chemistry Frontiers
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2022
·Vol. 6
·期 22
·3359-3368
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IF 8.683
Zixuan Zhou,Weizhong Yuan,Xiaoyun Xie
Flexible conductive hydrogels with excellent mechanical properties and stable electrical conductivity are ideal candidates for bioelectronic devices. However, the development of modern electronic products has higher requirements in terms of functionality of the materials. Herein, a composite hydrogel composed of polyvinyl alcohol (PVA), polyacrylic acid (PAA) and the conductive polymer PEDOT:PSS was developed, and the addition of tannic acid (TA) made the hydrogel possess good adhesion. The hydrogel exhibits excellent flexibility (640%, 123.1 kJ m−3) and electrical conductivity and can be adhered to various substrates with an adhesion strength of 14.97 kPa. In addition, benefiting from its excellent electrical conductivity and high-water content, the PVA/PAA-PEDOT:PSS-TA conductive hydrogel has an excellent EMI shielding effect. The PVA/PAA-PEDOT:PSS-TA hydrogel sensor can not only successfully detect various signals from human motion, but also express sign language through electrical signals when it was attached to five fingers, which provides a new idea for its application as a flexible wearable device for the deaf or hard-of-hearing people who do not speak verbally and under special situations. Importantly, this hydrogel can also act as a flexible triboelectric nanogenerator (TENG) with an adjustable output voltage for energy harvesting. This work was expected to provide avenues for the development of new intelligent systems for health monitoring and energy harvesting.
研究领域:
材料科学
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生物医学工程
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电子工程
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Liancong Shan,Chang Guo,Yiwei Sun,Jingcheng Chen,Qi Wang,Wen Fan
Human sweat offers critical physiological insights, fueling the development of wearable sweat sensors. Ascorbic acid (AA), a vital nutrient, requires precise monitoring in sweat to assess dietary and health status. Organic electrochemical transistors (OECTs) are promising for detecting redox-active molecules like AA due to their high sensitivity, low operating voltage, and aqueous compatibility. However, conventional OECTs, such as those with gold gate electrodes, struggle to selectively distinguish AA from molecules with similar redox potentials (e.g., dopamine, uric acid). To address this, we developed a novel, fully PEDOT:PSS-based flexible OECT with a polypyrrole-based molecularly imprinted polymer (PPy-MIP) on the gate electrode, electropolymerized with AA as the template to create highly selective AA-specific cavities. The PPy-MIP not only ensures selective AA capture but also catalyzes its oxidation, modulating channel current with a wide linear range (10–1000 μM), high sensitivity (46 % channel current change per decade), and an ultralow detection limit (50 nM). The sensor exhibits superior specificity, resisting interference from 100 μM uric acid, urea, glucose, and dopamine. Its flexible design, with minimal performance deviation (<0.85 % at 3 cm bending radius), enables reliable, non-invasive, real-time AA monitoring in sweat, surpassing clinical requirements and advancing personalized healthcare with a cost-effective, skin-conformable platform.
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高影响因子
危险品化学品经营许可证（带存储）