Article
Chemistry, Multidisciplinary
Shun-Xin Li, Hong Xia, Lei Wang, Xiang-Chao Sun, Yang An, He Zhu, Ben-Feng Bai, Hong-Bo Sun
Summary: Assembling perovskites into heterojunctions can achieve high-performance photodetectors, and lateral heterojunctions can improve performance and stability. In this study, a two-step imprinting method was developed to fabricate high-performance photodetectors with ultra-high polarization sensitivity and long-term stability.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Yuchen Miao, Jun Wu, Xiaorong Qi, Liu Yang, Xu Wang, Fei Zheng, Feiyu Zhao, Shareen Shafique, Yuejin Zhu, Ziyang Hu
Summary: Based on the hot-casting method, uniform and compact 2D-3D gradient perovskite thin films were prepared by investigating the effects of substrate temperature on the surface morphology and internal phases distribution of 2D perovskite films. The gradient phase distribution along the longitudinal direction of the thin film improves the photosensitivity of the photodiode over the whole visible spectrum range.
Article
Chemistry, Multidisciplinary
Yanan Wei, Hao Chen, Tianhua Liu, Song Wang, Yihang Jiang, Yu Song, Jianqi Zhang, Xin Zhang, Guanghao Lu, Fei Huang, Zhixiang Wei, Hui Huang
Summary: Organic photodetectors (OPDs) for near infrared (NIR) light detection, constructed by the sequential deposition (SD) method, exhibit high detectivity, reduced dark currents, and superior performance compared to devices made by blend casting (BC) method. The vertical phase segregation structure of SD devices leads to a significantly lower dark current, resulting in improved D* values under different bias voltages.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Xue Zhou, Jianping Xu, Shaobo Shi, Jing Chen, Jianghua Xu, Lina Kong, Xiaosong Zhang, Lan Li
Summary: ZnO/BiFeO3 heterojunction photodetectors utilize the built-in electric field and spontaneous polarization field to promote the separation and transport of photogenerated carriers, achieving self-powered photoresponse in UV and visible dual-wavelength.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Fei Zhu, Gang Lian, Deliang Cui, Qilong Wang, Haohai Yu, Huaijin Zhang, Qingbo Meng, Ching-Ping Wong
Summary: Organic-inorganic hybrid perovskite materials have excellent photoelectric properties and are widely used in self-powered photodetectors. However, achieving ordered carrier transport is challenging. In this study, a thermal-pressed strategy is proposed to solve this problem, resulting in improved photoresponse and high stability. The self-powered photodetectors demonstrate superior performance with a wide spectrum range and specific wavelength laser, showing great potential for practical applications.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zhengxun Lai, You Meng, Qi Zhu, Fei Wang, Xiuming Bu, Fangzhou Li, Wei Wang, Chuntai Liu, Feng Wang, Johnny C. Ho
Summary: This study successfully prepared quasi-2D perovskite films with graded phase distribution using a one-step spin-coating method, and constructed self-powered vertical-structure photodetectors, showing impressive performance with high responsivity and fast response speed. These results highlight the potential of graded quasi-2D perovskite phases for next-generation optoelectronic devices.
Article
Chemistry, Multidisciplinary
Xiaopeng Feng, Mingrui Tan, Mingbian Li, Haotong Wei, Bai Yang
Summary: Solution-processed perovskites have achieved significant advancements in sensor optoelectric devices, with L-ascorbic acid shown to stabilize the perovskite and suppress device noise effectively. The dual functions of L-AA enable high detectivity and a large linear dynamic range for the perovskite photodetector, making it promising for various applications like infrastructure construction and real-time information delivery.
Article
Chemistry, Physical
Huiming Shang, Feng Gao, Mingjin Dai, YunXia Hu, Shuai Wang, Bo Xu, Peng Wang, Bo Gao, Jia Zhang, PingAn Hu
Summary: A self-powered photodetector with light-induced electric field enhancement based on a 2D InSe/WSe2/SnS2 van der Waals heterojunction is designed, which achieves high responsivity and fast response speed by utilizing the light-induced electric field.
Article
Chemistry, Multidisciplinary
Ting Ji, Haibo Zhang, Jiahao Guo, Yingkui Wang, Linlin Shi, Yukun Wu, Wenyan Wang, Guohui Li, Rong Wen, Liantuan Xiao, Qingmei Su, Bingshe Xu, Hongzheng Chen, Yanxia Cui
Summary: In this study, a highly sensitive self-powered photodiode based on 2D perovskite material was demonstrated with dual interface passivations. The bottom passivation reduced defects and trap-related recombination loss, while the top passivation improved device stability. The dual interface passivated device showed a large photo-to-dark current ratio, fast response speed, and wide dynamic range.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yi He, Zedong Lin, Jian Wang, Kai Zhang, Xiuwen Xu, Yu Li, Xianzhen Huang, Tingli Ma, Shuang Xiao, Shihe Yang
Summary: Halide perovskites are promising materials for optoelectronic devices due to their outstanding properties and relatively low cost. However, the instability of common precursor solutions hampers large-scale low-cost production. In this study, a solid-liquid convertible perovskite precursor was developed using water, which exhibited high damp air stability and processibility for perovskite growth. By guiding the growth direction of perovskite, the film quality was significantly improved. The precursor was successfully used for fabricating self-driven halide perovskite photodetectors with low noise current, high specific detectivity, and high stability.
Article
Materials Science, Multidisciplinary
Yeonghun Yun, Hanbyeol Cho, Jina Jung, Sung Woong Yang, Devthade Vidyasagar, Rajendra Kumar Gunasekaran, Sangwook Lee
Summary: A high-performance self-powered blue photodetector was developed using eco-nomic and facile solution process at low temperatures. It achieved comparable performance to commercial gallium phosphide blue PD and exhibited excellent environmental stability under ambient air conditions. This research provides a basis for next-generation image sensor technologies.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Menghan Li, Jianping Xu, Shaobo Shi, Qiuyang Zhang, Jing Chen, Jianghua Xu, Qin Zheng, Lina Kong, Xiaosong Zhang, Lan Li
Summary: Self-powered photodetectors (PDs) with II-type CuxIn2-xS2/TiO2 heterojunctions show dual-wavelength photoresponse and can significantly improve the performance of self-powered PDs. The Cu/In ratio in CuxIn2-xS2 films can regulate the energy band structure and optical properties. The optimized PDs with Cu1.1In0.9S2/TiO2 heterojunctions exhibit high responsivity, detectivity, linear dynamic range, and sensitivity under UV light illumination and zero bias.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Dandan Hao, Dapeng Liu, Yukuan Shen, Qianqian Shi, Jia Huang
Summary: The self-powered photodetector based on CsBi3I10/SnO2 exhibits broad spectral response, fast response time, and good long-term stability. It demonstrates high photodetection capability, especially for weak light detection, making it a promising option for stable and broadband photodetectors in the future.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Fengren Cao, Meng Wang, Wei Tian, Haoxuan Sun, Liang Li
Summary: This study presents a semitransparent self-powered broad photodetector based on an inorganic CsPbI2Br perovskite/conjugated-polymer hybrid structure with a thiamine hydrochloride additive. By optimizing the concentration of the thiamine hydrochloride additive, the crystal orientation of the CsPbI2Br film is controlled to improve its stability and photoelectric properties.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Linjuan Guo, Xiu Liu, Linjie Gao, Xinzhan Wang, Lei Zhao, Wei Zhang, Shufang Wang, Caofeng Pan, Zheng Yang
Summary: 2D hybrid perovskite ferroelectrics have shown promising results in self-powered UV photodetection, with high responsivity and fast response time. The ferro-pyro-phototronic effect in the 2D PMA(2)PbCl(4) MMB-based photodetectors leads to significantly improved performance compared to photovoltaic-based detectors. These findings provide insights into the development of high-performance UV detection devices.
