Defects in Perovskites Have Positive Impact on Optoelectronic Devices
Defects are generally regarded to have negative impact on carrier recombination, charge-transport and ion migration in perovskite materials, which thus lower the efficiency and stability of perovskite optoelectronic devices. Meanwhile, lots of efforts which focused on minimizing defects have greatly promoted the application of perovskite materials. Then, can defects be positive in perovskite optoelectronic devices? Herein, relying on in-depth understanding of defect-associated effects in semiconductors, trapping of photo-generated carriers by defects is applied to enlarge photoconductive gain in perovskite photodetector. The record photoconductive gain, gain-bandwidth product and detection limit were achieved in the photodetector. Exceeding the general concept that defects are harmful, we showed that the defects can be positive in perovskite optoelectronic devices.
Code (0)
등록된 구현이 없습니다.
Similar Papers 제목 키워드 기반
Identifying and understanding the positive impact of defects and traps for perovskites optoelectronic devices
Abstract: Defects are generally regarded to have negative impact on carrier recombination, charge-transport and ion migration in perovskite materials, which thus lower the efficiency and stability of perovskite optoelect…
Charge trapping in lead halide perovskites enhanced the performance of optoelectronic devices
[Deng Y H. Can defects be positive in perovskite optoelectronic devices?[J]. arXiv preprint arXiv:2012.04346, 2020. https://arxiv.org/abs/2012.04346] Abstract: Defects are generally regarded to have negative impact on…
The highest gain of single-crystalline perovskite photodetectors based on high-quality single-crystalline thin film
Abstract The best performing modern optoelectronic devices rely on single‐crystalline thin‐film (SC‐TF) semiconductors grown epitaxially. The emerging halide perovskites, which can be synthesized via low‐cost solution‐b…
The Highest Performance of Single-Crystalline Perovskite Thin-Film Photodetectors
Abstract: The best performing modern optoelectronic devices rely on single‐crystalline thin‐film (SC‐TF) semiconductors grown epitaxially. The emerging halide perovskites, which can be synthesized via low‐cost solution‐b…
Chelating agent: The health protector of researchers in lead halide perovskite laboratory
Lead halide perovskites have achieved substantial success in various optoelectronic devices owing to their remarkable physical properties. However, lead (Pb) as a heavy metal, long-lasting toxic to the body has become a …