ChemNanoMat
·
2026
·Vol. 12
·期 9
·e70373
·
IF 2.6
Yongjia Liu,Xunqian Zhang,Zizhuo Nie,Jiuhong Wang,Yuhang Liu,Bo Peng,Shujiang Ding,Xinbing Jiang
The development of room-temperature ammonia (NH 3 ) sensors with high sensitivity, selectivity, and stability remains a significant challenge for environmental monitoring and healthcare applications. Herein, an interfacial-engineered P3HT–SnO 2 quantum dot (QD) composite was developed for high-performance room-temperature NH 3 sensing. The composite was fabricated through a facile wet-chemical method, where SnO 2 QDs were uniformly integrated with the p-type P3HT matrix to construct abundant heterointerfaces. The optimized P3HT–SnO 2 QD sensor with a mass ratio of 1:1 exhibited significantly enhanced NH 3 sensing performance, achieving a high response of 188.31% toward 50 ppm NH 3 at room temperature, together with excellent reproducibility, long-term stability, and anti-interference capability. The enhanced sensing behavior is attributed to the formation of p–n heterojunctions between P3HT and SnO 2 QDs, along with the quantum confinement effect of SnO 2 QDs to generate abundant surface-active sites, which induce interfacial charge redistribution, facilitate carrier transport, and promote NH 3 adsorption and surface reactions. Furthermore, density functional theory (DFT) calculations reveal the preferential adsorption of NH 3 molecules on the P3HT–SnO 2 interface, providing theoretical insights into the improved sensing selectivity. This work demonstrates an effective interfacial engineering strategy for constructing high-performance organic–inorganic hybrid NH 3 sensors operating at room temperature.
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 35
·16965-16973
·
IF 4.682
Wang Tao,Lu Yang,Xu Lin,Chen Zheng Jian
Surface-enhanced Raman scattering (SERS) has drawn attention to broad applications. Here, we investigate the SERS property of the π-conjugated poly(3-hexylthiophene-2,5-diyl) (P3HT) for molecule detection. The crystal structure of π-conjugated P3HT thin films is of the great significance to its SERS property. Our results show that the optimized crystal structure can significantly improve its SERS property. The SERS substrate has an excellent signal reproducibility (RSD < 10%). In addition, the SERS substrate still remains a good Raman enhancement after one year and shows excellent long-term stability compared with those of other types of SERS substrate. The result of our theory calculation shows that significant π-stacking of the probe molecules with the thiophene π-cores molecules plays an important role in the large SERS enhancement by the charge transfer mechanism. The increase in the crystallinity of the P3HT film can improve the charge transfer of the substrate molecules and the methylene blue (MB) molecules via more effective chemisorption of the probe molecules with the substrate molecules. The study contributed to the rational design of the organic semiconductor polymer SERS substrate with high sensitivity, selectivity, and long-term stability. Graphical abstract
研究领域:
材料科学
·
光谱学
·
有机化学
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DOI
高影响因子
Advanced Energy Materials
·
2021
·Vol. 12
·期 7
·2103241
·
IF 29.368
Ning Li,Anbo Feng,Xinbo Guo,Jinming Wu,Shengdan Xie,Qinglian Lin,Xiaomei Jiang,Yang Liu,Zhaolai Chen,Xutang Tao
Perovskite single crystals have recently been regarded as emerging candidates for photovoltaic application due to their improved optoelectronic properties and stability compared to their polycrystalline counterparts. However, high interface and bulk trap density in micrometer-thick thin single crystals strengthen unfavorable nonradiative recombination, leading to large open-circuit voltage ( V OC ) and energy loss. Herein, hydrophobic poly(3-hexylthiophene) (P3HT) molecule is incorporated into a hole transport layer to interact with undercoordinated Pb 2+ and promote ion diffusion in a confined space, resulting in higher-quality thin single crystals with reduced interface and bulk defect density, suppressed nonradiative recombination, accelerated charge transport, and extraction. As a result, a remarkably enhanced V OC of up to 1.13 V and efficiency of 22.1% are achieved, which are both the highest values for MAPbI 3 single-crystal solar cells. Moreover, the reduced defect density and suppressed carrier recombination lead to superior weak light response of the single-crystal solar cells after incorporation of P3HT, and an indoor photovoltaic efficiency of 39.2% at 1000 lux irradiation is obtained.
研究领域:
材料科学
·
光伏技术
·
界面工程
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DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Siyuan Weng,Man Zhao,Dayong Jiang
Compared with the electron donor of the bulk heterojunction (BHJ) organic/inorganic photodetectors (OPDs), there is less development in the field of electron acceptors that have strong absorption capacity in the visible light and near-infrared (NIR) region, which hinders the further research and development of OPDs. As a traditional acceptor, fullerene has limited electronic tunability and weak visible light absorption, which limits the optical absorption and electron tunability properties required by the donor. In this work, a novel low-band-gap nonfullerene acceptor (NFA) sodium indocyanine green (Ir-125) is introduced, blended with a fullerene derivative acceptor [6,6]-phenyl C61-butyric acid methyl ester (PC61BM) and a conjugate polymer donor poly(3-hexylthiophene) (P3HT), to form ternary BHJ-active layers, forming a high-performance BHJ OPD with ultrawide spectral response from the ultraviolet (200 nm) to visible light to NIR (1050 nm) region. Here, the high-performance OPD exhibits complementary absorption on the scale of exciton diffusion length and is uniformly mixed with the pure phases. The OPD has high external quantum efficiency (132%) and high detectivity (9.07 × 1012 Jones), which is much higher than those of P3HT:PC61BM, which are 58% and 3.62 × 1012 Jones, respectively, and also, OPDs show an increase in the photocurrent to dark current ratio (Iphoto/Idark) by one order of magnitude. The generation of the balanced photocurrent between the donor and NFA eliminates the undesirable limitation on the donor imposed by fullerene derivatives and expand the response range of the BHJ OPD, which opens up a new avenue toward a higher efficiency and wider response range for the OPDs.
研究领域:
材料科学
·
光电技术
·
有机电子学
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DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2016
·Vol. 18
·期 9
·1-10
·
IF 2.101
Zhong Benbin,Zu Xihong,Yi Guobin,Huang Hailiang,Zhang Minghai,Luo Hongsheng
In this paper, well-ordered Au nanoparticle arrays on silicon substrates were employed as efficient metal-enhanced fluorescence (MEF) substrates for investigating the fluorescence properties of the conjugated polymer poly(3-hexylthiophene) (P3HT). The ordered Au nanoparticle arrays were fabricated by block copolymer self-assembly technology, and the particle sizes were controlled by adjusting the molar ratios of HAuCl 4 precursor to vinyl pyridine units. The approach is economical and suitable to fabricate large-area MEF substrates. The results about fluorescence properties of P3HT showed that the fluorescence intensities of the P3HT films were improved on ordered Au nanoparticle arrays compared to those on bare silicon substrate and were significantly enhanced with the Au nanoparticle sizes increasing. The mechanism is based on localized surface plasmon resonances, coupling and propagating surface plasmons, and the emission enhancement mainly resulted from the increase of the excitation rate. This work provides a new way to prepare efficient MEF substrates for high-performance fluorescence-based devices.
研究领域:
材料科学
·
光学
·
纳米技术
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DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2022
·
IF 4.644
Xiaoyan Li,Meili Yang,Shaochuan Hou,Jiahao Yan,Jingjing Dong,Li Zou,Jie Xing,Hao Liu,Huiying Hao
Although CsPbBr 3 perovskite solar cells (PSCs) have excellent thermal and humidity stability, the narrow spectral absorption range and severe charge recombination within the CsPbBr 3 film and device interfaces result in a low power conversion efficiency (PCE). In this work, self-synthesized graphene quantum dots (GQDs) and poly(3-hexylthiophene) (P3HT) are introduced to modify the m-TiO 2 /CsPbBr 3 and CsPbBr 3 /carbon interfaces of CsPbBr 3 PSCs, respectively. It is found that the carrier extraction and transfer are improved enormously after GQDs and P3HT dual modifications, which can be attributed to the passivated trap states, suppressed charge recombination, and reduced the interfacial energy barrier. Ultimately, for the carbon-based CsPbBr 3 PSCs, a champion PCE as high as 9.74% with outstanding short-circuit current density (J SC ) of 9.36 mA cm -2 and open-circuit voltage (V OC ) of 1.42 V has been achieved, and the device stability has also been improved greatly. Such a strategy contributes to improving the performance of CsPbBr 3 PSCs.
研究领域:
材料科学
·
光伏技术
·
纳米科技
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 34
·2301920
·
IF 19
Yaqing Li,Xiayao Lu,Yantao Mei,Chen Dong,Deepak Thrithamarassery Gangadharan,Kong Liu,Zhijie Wang,Shengchun Qu,Makhsud I. Saidaminov,Weifeng Zhang,Furui Tan
Perovskite solar cells with carbon electrode have a commercial impact because of their facile scalability, low-cost, and stability. In these devices, it remains a challenge to design an efficient hole transport layer (HTL) for robust interfacing with perovskite on one side and carbon on another. Herein, an organic/inorganic double planar HTL is constructed based on polythiophene (P3HT) and nickel oxide (NiOx) nanoparticles to address the named challenge. Through adding an alkyl ammonium bromide (CTAB) modified NiOx nanoparticle layer on P3HT, the planar HTL achieves a cascade type-II energy level alignment at the perovskite/HTL interfaces and a preferential ohmic contact at NiOx/carbon electrode, which greatly benefits in charge collection while suppressing charge transfer recombination. Besides, compared with the single P3HT layer, the planar composite enables a robust interfacial contact by protecting perovskite from being corroded by carbon paste during fabrication. As a result, the blade-coated FA 0.6 MA 0.4 PbI 3 perovskite solar cells (fabricated in ambient air in fume hood) with carbon electrode deliver an efficiency of 20.14%, the highest value for bladed coated carbon and perovskite solar cells, and withstand 275 h maximum power point tracking in air without encapsulation (95% efficiency retained).
研究领域:
材料科学
·
能源技术
·
光伏器件
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DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 29
·17633-17639
·
IF 3.108
Fei Zheng,Xiao-Yu Yang,Peng-Qing Bi,Meng-Si Niu,Cheng-Kun Lv,Lin Feng,Xiao-Tao Hao,Kenneth P. Ghiggino
2-Chlorophenyl isocyanate (CI) reacts with didodecyl dimethyl ammonium bromide (DDAB) functionalized graphene oxide (DDAB-GO) dispersed in ortho-dichlorobenzene under mild conditions. The CI treatment complements DDAB functionalization to further decrease the hydrophilicity of pristine GO sheets. The resulting CI–DDAB-GO exhibits improved compatibility with the conjugated polymer poly(3-hexylthiophene) (P3HT), compared to DDAB-GO. CI–DDAB-GO sheets can be homogeneously dispersed when blended with P3HT, resulting in an improved morphology compared to P3HT:DDAB-GO composites. The incorporation of CI–DDAB-GO can effectively reduce the dark current of photo-diodes based on P3HT composites, showing potential to enhance the performance of electronic devices based on conjugated polymer composites.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
ChemNanoMat
·
2024
·Vol. 10
·期 7
·e202400053
·
IF 2.6
Yuqian Fei,Zizhuo Nie,Shujiang Ding,Jiuhong Wang,Wei Yu,Na Li,Yuhang Liu,Bo Peng,Xiaoli Feng,Limin Liu,Xinbing Jiang
Gas sensors for ammonia (NH 3 ) play a crucial role in the maintenance of air quality, preservation of the atmosphere, and evaluation of human health. However, the endeavor to attain a high level of sensitivity in detecting NH 3 under ambient conditions remains a challenging task. In this work, poly(3-hexylthiophene)s and titanium dioxide (P3HT-TiO 2 ) heterostructure NH 3 gas-sensitive material was prepared, and by drop-casting the material onto a substrate with Au interdigital electrodes, a sensor for high-response detection of NH 3 at room temperature was constructed. The designed gas sensor exhibited a high response signal of 114.61 % toward 15 ppm NH 3 at room temperature (25 °C) with good reproducibility, strong long-term stability, and excellent selectivity. Moreover, by analyzing the response law of the sensor under different humidity conditions, it has been noted that both excessively high and excessively low levels of humidity adversely affect the sensor's response. The remarkable increase in NH 3 sensing properties is attributed to the synergistic enhancement effect of P−N heterojunction formed between P3HT and TiO 2 . This NH 3 gas sensor exhibits tremendous potential for use due to its straightforward structure and outstanding ammonia sensing performance.
研究领域:
材料科学
·
环境科学
·
化学传感器
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yue Long,Gang Wang,Li Xiao,Hang Xu,Weikui Li,Zezhuan Jiang,Zhenzhen Li,Chaoting Wang,Zhukang Zhang,Cheng Li
Dopant-free poly(3-hexylthiophene) (P3HT) has attracted increasing interest as a stable and solution-processable hole-transporting layer (HTL) for perovskite solar cells (PSCs), yet its relatively weak interfacial contact and limited hole-extraction capability remain major constraints on device efficiency. Here, we demonstrate an effective interfacial engineering strategy using two π-conjugated molecules, triphenylamine (TPA) and 4,4′,4″-tricarboxytriphenylamine (TCTA), to simultaneously regulate the perovskite/P3HT interface and suppress interfacial defects. The benzene-ring frameworks of TPA and TCTA enable strong π–π stacking interactions with the thiophene units of P3HT, improving molecular ordering and facilitating more efficient hole transport. Meanwhile, the carboxyl groups in TCTA provide robust coordination with undercoordinated Pb2+, leading to superior defect passivation and more favorable energy-level alignment at the interface. As a result, TCTA-treated devices exhibit significantly enhanced charge extraction, reduced nonradiative recombination, and improved operational stability. Benefiting from these synergistic effects, the power conversion efficiency of dopant-free P3HT-based PSCs is boosted from 12.66% to 17.17% and 19.68% for TPA- and TCTA-modified devices, accompanied by markedly improved moisture stability and long-term durability. This work provides a promising molecular design principle for constructing high-performance and stable dopant-free P3HT-HTL–based PSCs.
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DOI
PubMed
高影响因子
Frontiers of Optoelectronics
·
2020
·Vol. 13
·期 3
·265-271
·
IF 0
Mu Shaiqiang,Ye Qiufeng,Zhang Xingwang,Huang Shihua,You Jingbi
Cesium-based inorganic perovskite solar cells (PSCs) are paid more attention because of their potential thermal stability. However, prevalent salt-doped 2,2′,7,7′-tetrakis(N,N-dipmethoxyphenylamine)9,9′-spirobifluorene (Spiro-OMeTAD) as hole-transport materials (HTMs) for a high-efficiency inorganic device has an unfortunate defective thermal stability. In this study, we apply poly (3-hexylthiophene-2,5-diyl) (P3HT) as the HTM and design all-inorganic PSCs with an indium tin oxide (ITO)/SnO 2 /LiF/CsPbI 3− x Br x /P3HT/Au structure. As a result, the CsPbI 3 − x Br x PSCs achieve an excellent performance of 15.84%. The P3HT HTM-based device exhibits good photo-stability, maintaining ∼80% of their initial power conversion efficiency over 280 h under one Sun irradiation. In addition, they also show better thermal stability compared with the traditional HTM Spiro-OMeTAD.
研究领域:
材料科学
·
能源科学
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DOI
PubMed
SOLAR ENERGY
·
2022
·
IF 7.188
Guangcheng Wu,Xuting Dong,Guanglei Cui,Rui Sun,Xianhu Wu,Min Gu,Zewen Zuo,Yong Liu
Poly(3-hexylthiophene) (P3HT) based devices possess potential toward low-cost and easy fabrication for high-performance perovskite solar cells (PSCs). However, these devices currently suffer from stability and relative low performance. Herein, a gradient mixed-cation perovskite is obtained by a facile strategy of tailoring MAPbI 3-x Cl x , in which MAFAPbI 3-x Cl x were constructed in ambient air by directly spin-coating FAI onto perovskite intermediate phase. The pristine device shows an inferior power conversion efficiency (PCE) of 13.71%, whereas the as-optimized device achieves a PCE of 16.26%. A gradient distribution of FA cation is revealed by crystal unit parameters and energy dispersive spectrometer (EDS). The lifted valence band edge matches better with the HOMO of P3HT, thus resulting in the faster charge extraction. In addition, the reduced trap states lead to the enhanced crystallinity and the mitigation of perovskite/P3HT interface, and then the stability is significantly enhanced. Our work provides a facile way to improve the performance of P3HT based air-processed PSCs, which can bring these devices closer to low-cost commercial applications.
研究领域:
材料科学
·
能源技术
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产品关联
DOI
高影响因子
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