Journal
LASER & PHOTONICS REVIEWS
Volume 16, Issue 12, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.202200301
Keywords
doping optimization; lead-free double halide perovskites; nanoparticle integration; photodetectors; stability
Categories
Funding
- National Natural Science Foundation of China [62175025, 11974143, U1801253, 51788104]
- Outstanding Young Talents of Dalian [2021RJ07]
- Natural Science Foundation of Jilin Province [20200201252JC]
Ask authors/readers for more resources
In this study, highly sensitive, stable, and fast-response lead-free double halide perovskite photodetectors (PDs) are successfully achieved through doping optimization and integration with silver nanoparticles (NPs). The doping optimization of Na+/Ce3+ improves the crystallization quality and stability of Cs2AgBiBr6, resulting in reduced defect density and improved charge mobility. Integration with silver NPs further enhances charge extraction and transport efficiency. The developed PDs exhibit high detectivity, outstanding stability, and fast-response time.
Lead-free double halide perovskites stand out as a promising material for constructing stable and environmental-friendly photodetectors (PDs) because of the excellent stability and nontoxicity. However, the performance (e.g., detectivity and response speed) of lead-free double halide perovskites based PDs is still low. Herein, highly sensitive, stable, and fast-response Cs2AgBiBr6 perovskite PDs are presented by synergistic engineering of doping optimization of Na+/Ce3+ and integrating with Ag nanoparticles (NPs). Compared to pristine Cs2AgBiBr6, Cs2AgBiBr6:Na+,Ce3+ film is endowed with higher crystallization quality and better stability after Na+,Ce3+ codoping, toward the reduced defect density, the improved charge mobility. Meanwhile, a significantly enhanced charge extraction and transport in Cs2AgBiBr6:Na+,Ce3+/Ag NPs hybrid film is achieved by further integrating with Ag NPs. Finally, Cs2AgBiBr6:Na+,Ce3+/Ag NPs hybrid film-based PDs are developed, delivering high detectivity of 1.34 x 10(12) Jones@460 nm and 1.18 x 10(12) Jones@370 nm, which is the relatively high in lead-free double halide perovskites PDs and exceeds the most results of the previous reports in the ultraviolet and visible range. The devices also show outstanding stability and fast-response time (395 ns). This work opens up a novel frontier for developing lead-free perovskite PDs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available