ACS Applied Electronic Materials
·
2022
·
IF 4.494
Xiaoxian Song,Fuguo Wang,Hongwen Li,Haiting Zhang,Ze Xu,Dongdong Wei,Jingjing Zhang,Zijie Dai,Yunpeng Ren,Yunxia Ye,Xudong Ren,Jianquan Yao
Ultraviolet–visible–near-infrared broad-band PDs have attracted great attention for imaging systems and optical communications. Previous UV–NIR PDs have mainly worked in a single band. UV–NIR dual-modal detectors, which maintain a greater light response through nonlinear light absorbance in the second mode, remain to be explored. Here, a CsPbI2Br dual-mode PD is reported for the first time. The light absorption, phase stability, and chemical stability of CsPbI2Br are enhanced by CsBr and H2O. The device shows (UV–vis)/NIR absorption through one-photon and two-photon absorption. The CsPbI2Br PD has excellent (UV–vis)/NIR dual-mode detection performance under ultraviolet (405 nm), visible (532 nm) and near-infrared (808 nm) illumination, respectively; the device has high responsivities of 160, 36, and 118 A/W, specific detectivities of 4.9 × 1011, 6.3 × 1010, and 2.1 × 1011 jones and response times of 5.5/6.8, 5.3/5.9, and 5.9/6.4 ms, respetively. This work provides a route for UV–NIR dual-mode detection and promotes the applications of these PDs in photoelectric devices for weak light and wide spectrum detection.
研究领域:
材料科学
·
光电技术
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DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-15
·
IF 17.694
Liu Tian,Li Lingxiao,Wang Shuo,Dong Fudan,Zuo Shiyi,Song Jiaxuan,Wang Xin,Lu Qi,Wang Helin,Zhang Haotian,Cheng Maosheng,Liu Xiaohong,He Zhonggui,Sun Bingjun,Sun Jin
Sulfur bonds, especially trisulfide bond, have been found to ameliorate the self-assembly stability of homodimeric prodrug nanoassemblies and could trigger the sensitive reduction-responsive release of active drugs. However, the antitumor efficacy of homodimeric prodrug nanoassemblies with single reduction-responsivity may be restricted due to the heterogeneous tumor redox microenvironment. Herein, we replace the middle sulfur atom of trisulfide bond with an oxidizing tellurium atom or selenium atom to construct redox dual-responsive sulfur-tellurium-sulfur and sulfur-selenium-sulfur hybrid chalcogen bonds. The hybrid chalcogen bonds, especially the sulfur-tellurium-sulfur bond, exhibit ultrahigh dual-responsivity to both oxidation and reduction conditions, which could effectively address the heterogeneous tumor microenvironment. Moreover, the hybrid sulfur-tellurium-sulfur bond promotes the self-assembly of homodimeric prodrugs by providing strong intermolecular forces and sufficient steric hindrance. The above advantages of sulfur-tellurium-sulfur bridged homodimeric prodrug nanoassemblies result in the improved antitumor efficacy of docetaxel with satisfactory safety. The exploration of hybrid chalcogen bonds in drug delivery deepened insight into the development of prodrug-based chemotherapy to address tumor redox heterogeneity, thus enriching the design theory of prodrug-based nanomedicines.
研究领域:
药学
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纳米技术
·
癌症研究
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药物递送系统
·
材料科学
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DOI
PubMed
高影响因子
IEEE TRANSACTIONS ON ELECTRON DEVICES
·
2026
·
IF 3.6
Lisheng Chen,Xiannian Shi,Zhixin Lin,Jiao Xu,Teng Yun,Sudong Wu
The development of high-performance ultraviolet (UV) photodetectors is often constrained by a fundamental tradeoff between responsivity, response speed, and power consumption, limiting their overall performance. Here, we demonstrate a device paradigm that addresses this challenge by integrating a Bi ${}_{{3}.{25}}$ La ${}_{{0}.{75}}$ Ti3O12 (BLT) ferroelectric gate dielectric with an AlGaN/GaN high-electron-mobility transistor (HEMT). The design leverages a nonvolatile polarization field of the ferroelectric material in tandem with an external electric field to modulate the 2-D electron gas (2DEG) channel, offering a unique mechanism for fine-tuning optoelectronic performance. Benefiting from this ferroelectric gating enhancement, the BLT-gated phototransistor exhibits outstanding and well-balanced characteristics, including an ultrahigh responsivity of $2.13\times 10^{{6}}$ A/W, a specific detectivity of $9.36\times 10^{{14}}$ Jones, and rise/fall times of 0.38/2.84 s. The device can also detect weak UV light at 360nm with an illumination intensity as low as $2~\mu $ W/cm2. This work demonstrates a novel approach for electrically tuning responsivity via ferroelectric poling, offering a promising pathway toward high-performance UV phototransistors. These findings advance the design of UV photodetectors with balanced performance for a wide range of practical optoelectronic applications.
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高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Wenlei Yin,Jiayan Yang,Keyang Zhao,Anyang Cui,Jiaoyan Zhou,Wei Tian,Wenwu Li,Zhigao Hu,Junhao Chu
Photodetectors based on p-type metal oxides are still a challenge for optoelectronic device applications. Many effects have been paid to improve their performance and expand their detection range. Here, high-quality Cu1–xNixO (x = 0, 0.2, and 0.4) film photodetectors were prepared by a solution process. The crystal quality, morphology, and grain size of Cu1–xNixO films can be modulated by Ni doping. Among the photodetectors, the Cu0.8Ni0.2O photodetector shows the maximum photocurrent value (6 × 10–7 A) under a 635 nm laser illumination. High responsivity (26.46 A/W) and external quantum efficiency (5176%) are also achieved for the Cu0.8Ni0.2O photodetector. This is because the Cu0.8Ni0.2O photosensitive layer exhibits high photoconductivity, low surface states, and high crystallization after 20% Ni doping. Compared to the other photodetectors, the Cu0.8Ni0.2O photodetector exhibits the optimal response in the near-infrared region, owing to the high absorption coefficient. These findings provide a route to fabricate high-performance and wide-detection range p-type metal oxide photodetectors.
研究领域:
光电子学
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材料科学
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半导体器件
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2025
·
IF 4.9
Dan Ma,Hai Zhang,An-ru Liao,Qian-rong Peng,Min Yang
A B S T R A C T Drug delivery systems utilizing tumor targeting, microenvironment responsiveness, and combination therapy have demonstrated advantages in antitumor research by enhancing efficacy and reducing side effects. In this study, a bifunctional amphiphilic carrier material (HA-SSS-MC) with targeting and glutathione-responsive properties was developed by linking hydrophilic hyaluronic acid (HA) and hydrophobic methyl cholate (MC) via a trisulfide bond. The photosensitizer zinc phthalocyanine (ZnPc) and the chemotherapeutic drug 5-fluorouracil (5-FU) were encapsulated within the amphiphiles to form dual drug-loaded nanomicelles (HA-SSS-MC/5-FU/ZnPc). These nanomicelles exhibited high drug loading efficiency, stability, and glutathione (GSH)-sensitive release properties. Notably, the singlet oxygen quantum yield of the drug-loaded nanomicelles was significantly higher than that of the free photosensitizer under high glutathione conditions. In vitro cellular assays confirmed that HA-SSS-MC/5-FU/ZnPc nanomicelles exhibited low cytotoxicity and demonstrated a significant cancer cell-killing effect, surpassing Free 5-FU or ZnPc alone. Furthermore, the nanomicelles showed targeting capabilities and accumulated within endosomes. In A549 tumor-bearing mice, HA-SSS-MC/5-FU/ZnPc exhibited the strongest antitumor efficacy and the lowest toxicity compared to all other groups. In conclusion, the targeted GSH-responsive dual drug-carrying nanomicelles will be a promising strategy for cancer therapy.
研究领域:
药物递送系统
·
肿瘤学
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生物材料学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Yusong Zhang,Haoyan Chen,Rihui Yao,Guoping Su,Han He,Jiahao Zheng,Huacheng Tang,Yichun Lu,Honglong Ning,Junbiao Peng
As an ultrawide-bandgap semiconductor, Ga 2 O 3 is highly promising for solar-blind ultraviolet detection. Traditional preparation methods are often complicated and costly. In this study, α-Ga 2 O 3 nanorods were synthesized via a hydrothermal method and employed to construct a photoelectrochemical ultraviolet PD (PEC UV PD). We investigated the influence of hydrothermal parameters on the Ga 2 O 3 thin films. It was observed that extending the hydrothermal reaction time led to an increase in film thickness, whereas elevating the precursor concentration resulted in a reduction in nanorod dimensions. Notably, the introduction of ammonia induced preferential orientation of the nanorods. On the basis of these findings, a Ga 2 O 3 -based PEC PD with a preferential (104) crystal-plane orientation was successfully fabricated, demonstrating excellent solar-blind detection performance. Under 267 nm deep ultraviolet light, it achieved a maximum responsivity (R) of 27.8 mA W⁻¹ and detectivity (D*) of 2.80 × 10¹⁰ Jones, with a solar-blind to near-ultraviolet rejection ratio (R 267nm /R 365nm ) of 11,949. The rise time (τᵣᵢₛₑ) was 36.2 ms, and the delay time (τ delay ) was 20.1 ms. By combining experiments with density functional theory (DFT) calculations, the study indicates the (104) surface facilitates H₂O adsorption, enhancing the oxidation reaction at the PEC PD photoanode-electrolyte interface. This work offers a new approach for developing cost-effective, high-performance solar-blind ultraviolet detectors.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Mingchen Xu,Xinfa Zhu,Gaoning Fan,Xiyu Jia,Yonghui Zhang,Mengjun Wang,Hongxing Zheng,Pengyu Zhou,Chao Fan
Visible photodetectors based on two-dimensional tin disulfide (SnS2) have attracted interest for applications in optical communication, information capture, and military reconnaissance owing to their high absorption efficiency, atomic-scale thickness, and nontoxicity. However, their intrinsic bandgap limits their spectral detection range, hindering further practical applications. Herein, we introduce VIII B-nickel (Ni) with a similar ionic radius to Sn to form Ni-doped SnS2 few-layers via micromechanical exfoliation. As the Ni-doping concentration increases, the bandgap decreases from 2.14 (SnS2) to 1.95 eV (Sn0.9Ni0.1S2). Subsequently, Ni-doped SnS2-based photodetectors are fabricated and characterized. These devices exhibit an extended spectral detection range and excellent performance, with a maximum responsivity of 2009 A W–1 and high normalized detectivity of 2.47 × 1012 cm Hz1/2 W–1. Furthermore, to suppress dark current and noise, SnS2/Ni-doped SnS2 homostructures and their corresponding photodetectors are fabricated. The built-in electrical field of the homostructure effectively reduces the dark current of the homostructure photodetector to 110 nA. Consequently, the responsivity is enhanced to 3350 A W–1 and the response time is reduced to 3.5 ms, outperforming most other 2D material–based and commercial photodetectors. And Ni-SnS2 VPDs show an application potential in imaging and visible-light communication systems. Thus, this study presents an effective approach to extend the detection spectrum of SnS2-based photodetectors and pave the way for their future applications.
研究领域:
材料科学
·
光电技术
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产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-13
·
IF 12.264
Liu Sisi,Li Ming-Yu,Zhang Jianbing,Su Dong,Huang Zhen,Kunwar Sundar,Lee Jihoon
AbstractSection
Highlights
High performance Al nanostructures/ZnO quantum dots heterostructure photodetectors with a controllable geometry of the Al nanostructures are demonstrated.
Light utilization of the photoactive layers is significantly boosted with the Al nanostructures.
The light confinement effect is inherently determined by the geometries of the Al nanostructures.
AbstractSection
Abstract
Light confinement induced by spontaneous near-surface resonance is inherently determined by the location and geometry of metallic nanostructures (NSs), offering a facile and effective approach to break through the limitation of the light-mater interaction within the photoactive layers. Here, we demonstrate high-performance Al NS/ZnO quantum dots (Al/ZnO) heterostructure UV photodetectors with controllable morphologies of the self-assembled Al NSs. The Al/ZnO heterostructures exhibit a superior light utilization than the ZnO/Al heterostructures, and a strong morphological dependence of the Al NSs on the optical properties of the heterostructures. The inter-diffusion of Al atoms into ZnO matrixes is of a great benefit for the carrier transportation. Consequently, the optimal photocurrent of the Al/ZnO heterostructure photodetectors is significantly increased by 275 times to ~ 1.065 mA compared to that of the pristine ZnO device, and an outstanding photoresponsivity of 11.98 A W −1 is correspondingly achieved under 6.9 mW cm −2 UV light illumination at 10 V bias. In addition, a relatively fast response is similarly witnessed with the Al/ZnO devices, paving a path to fabricate the high-performance UV photodetectors for applications.
研究领域:
材料科学
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光学工程
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 13
·1996
·
IF 5.3
Mutan Luo,Run Chen,Zhaowei Zhu,Chuantong Cheng,Xin Ning,Beiju Huang
A high-efficiency photodetector consisting of colloidal PbS quantum dots (QDs) and single-layer graphene was prepared in this research. In the early stage, PbS QDs were synthesized and characterized, and the results showed that the product conformed with the characteristics of high-quality PbS QDs. Afterwards, the photodetector was derived through steps, including the photolithography and etching of indium tin oxide (ITO) electrodes and the graphene active region, as well as the spin coating and ligand substitution of the PbS QDs. After application testing, the photodetector, which was prepared in this research, exhibited outstanding properties. Under visible and near-infrared light, the highest responsivities were up to 202 A/W and 183 mA/W, respectively, and the highest detectivities were up to 2.24 × 1011Jones and 2.47 × 108Jones, respectively, with light densities of 0.56 mW/cm2and 1.22 W/cm2, respectively. In addition to these results, the response of the device and the rise and fall times for the on/off illumination cycles showed its superior performance, and the fastest response times were approximately 0.03 s and 1.0 s for the rise and fall times, respectively. All the results illustrated that the photodetector based on PbS and graphene, which was prepared in this research, possesses the potential to be applied in reality.Keywords:PbS quantum dots;graphene;indium tin oxide;photodetector;high responsivity and detectivity
研究领域:
材料科学
·
光电子学
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产品关联
DOI
PubMed
高影响因子
Small
·
2017
·Vol. 13
·期 25
·1700364
·
IF 8.643
Xuhai Liu,Dejian Yu,Fei Cao,Xiaoming Li,Jianping Ji,Jun Chen,Xiufeng Song,Haibo Zeng
All-inorganic photodetectors based on scattered CsPbBr 3 nanoplatelets with lateral dimension as large as 10 µm are fabricated, and the CsPbBr 3 nanoplatelets are solution processed governed by a newly developed ion-exchange soldering mechanism. Under illumination of a 442 nm laser, the photoresponsivity of photodetectors based on these scattered CsPbBr 3 nanoplatelets is as high as 34 A W −1 , which is the largest value reported from all-inorganic perovskite photodetectors with an external driven voltage as small as 1.5 V. Moreover, the rise and fall times are 0.6 and 0.9 ms, respectively, which are comparable to most of the state-of-the-art all-inorganic perovskite-based photodetectors. All the material synthesis and device characterization are conducted at room temperature in ambient air. This work demonstrates that the solution-processed large CsPbBr 3 nanoplatelets are attractive candidates to be applied in low-voltage, low-cost, ultra highly integrated optoelectronic devices.
研究领域:
材料科学
·
光电子学
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纳米科技
·
半导体器件
·
凝聚态物理
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 36
·13040-13046
·
IF 8.067
Yi Huang,Jin Tan,Gang Gao,Jianmei Xu,Ling Zhao,Wei Zhou,Qing Wang,Shuoguo Yuan,Jian Sun
Currently, ultraviolet photodetectors attract extensive attention from people all over the world due to their applications in solar ultraviolet radiation detection, flame detection, ozone monitoring, missile tracking, and environmental monitoring. A heterojunction is an essential aspect for fulfilling the demand for high-performance self-powered ultraviolet photodetectors. However, it is still very challenging to achieve both good electrical property and transparency for p-type semiconductors and conductors especially at low preparation temperature. This work reports the fabrication of ultrathin, ultra-high-transparency and very smooth CuI films at room temperature by the copper film iodination method, whose figure of merit (FoM) far exceeds those of most of the typical p-type oxides. The obtained p-type CuI films (p-CuI) were fabricated on an n-type Si (n-Si) substrate to construct a heterojunction photodetector. The p-CuI/n-Si photodetector has excellent optoelectronic properties in self-powered mode, including a large responsivity and detectivity (123.3 mA W−1, 5.7 × 1012 Jones), and a fast response speed (rise/decay time of 90 μs/140 μs), which are overall better than those of all types of CuI-based self-powered photodetectors. In addition, the CuI film deposited on the flexible substrate was applied in a CuI photodetector with a metal–semiconductor–metal structure, exhibiting good optoelectronic properties and bending stability, which shows promising applications in transparent, flexible, wearable electronic and optoelectronic devices.
研究领域:
光电子学
·
材料科学
·
半导体器件
·
光电探测器
·
柔性电子学
✓ 已验证
DOI
高影响因子
Small
·
2025
·
IF 12.1
Bocong Zou,Hulin Wang,Runchao Dong,Jia Zhang,Zhiheng Liu,Yan Lin,Zhicheng Zhu,Xiangyang Hu,Weijun Li,Dongdong Zhang,Xiaoxiao Li,Lin Wang,Huan He,Weiyou Yang,Fengmei Gao,Shanliang Chen
The precise control of the surface properties of low-dimensional nanostructures is a prerequisite for preserving the intrinsic material quality and manipulating the carrier transport behavior to enhance optoelectronic device performance. Herein, a high-responsivity photoelectrochemical (PEC) ultraviolet (UV) photodetector (PD) based on SiC/TiO 2 heterojunction nanowires is developed. The surface of SiC nanowires is decorated with high-quality TiO 2 nanoparticles through a simple hydrothermal process, and a type-II heterojunction is established. The fabricated SiC/TiO 2 heterojunction nanowire PEC PD exhibited excellent photoresponsivity with high responsivity (50.97 mA W −1 ), detectivity (1.07 × 10 12 Jones), and external quantum efficiency (16.85%) under 375 nm ultraviolet illumination. Response and decay times are as low as 0.3 and 0.1 ms, respectively—these values are within the state-of-the-art range for semiconductor nanostructure–based PEC PDs reported thus far. The device also exhibits excellent photoresponsivity and long-term stability under different light intensities, even in harsh universal-pH liquid environments, including acidic, neutral, and alkaline solutions with different concentrations. The elevated photodetection performance of the device is primarily attributed to the effective synergistic effect of the formation of a type-II charge transfer pathway in the SiC/TiO 2 heterostructure, the optimal load capacity of TiO 2 nanoparticles, and the excellent inherent corrosion resistance of SiC and TiO 2 .
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DOI
PubMed
高影响因子
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