Spatial Electrode Modulation Strategy for the Perovskite Single Crystal Photodetector
Perovskite meets the diverse needs of photodetectors (PDs) with excellent material properties and wealth of tuning capabilities. Herein, proposed by the spatial electrode modulation strategy, two kinds of perovskite PDs were designed and fabricated, which can modulate the detection bands and enhance the spectrum response greatly. For the light window electrode perovskite PDs, the asymmetric electric field can enhance the carrier collection efficiency and unravel the trade-off between high response and narrowband of PDs, exhibiting both high spectral selectivity (full width at half-maximum <14 nm) and high external quantum efficiency (EQE) of 78.5% at 570 nm. For the dot electrode structure PDs, broadband detection is achieved, attributing to the local electric field enhancement effect, achieving extra avalanche gain with a high EQE of 300% and faster response time of about 42 μs. Furthermore, we developed a packaging process for perovskite devices that enables their direct use in a humid environment. The proposed spatial electrode modulation strategy introduces a novel design paradigm for perovskite optoelectronic devices, paving the way for broader applications.
Authors
- Yupeng Zhu (ORCID: https://orcid.org/0000-0002-6260-5238)
- Zhenglan Ye (ORCID: https://orcid.org/0000-0003-0616-2409)
- Qinxing Huang
- Buwen Cheng (ORCID: https://orcid.org/0000-0002-6547-1458)
- Chunlan Zhou (ORCID: https://orcid.org/0000-0002-9543-0091)
- Tao Men
- Jun Zheng (ORCID: https://orcid.org/0000-0002-8622-2661)
- Zhi Liu (ORCID: https://orcid.org/0000-0001-5346-7569)
- Dan Chen (ORCID: https://orcid.org/0000-0003-0815-6926)
- Jiayi Li (ORCID: https://orcid.org/0009-0005-3308-4284)
- Guangze Zhang
- Yazhou Yang
- Lei Zhao (ORCID: https://orcid.org/0009-0008-4966-6424)
- Congwei Shi
- Yuankai Song
- Yuhua Zuo (ORCID: https://orcid.org/0000-0003-2551-0640)
- Xiangquan Liu (ORCID: https://orcid.org/0000-0002-4664-4544)
Institutions
- Chinese Academy of Sciences (CN)
- Institute of Electrical Engineering (CN)
- Institute of Semiconductors (CN)
- University of Chinese Academy of Sciences (CN)
- Beijing Information Science & Technology University (CN)
- Beihang University (CN)
Publication Details
- Journal
- ACS Photonics
- Published
- 2024-08-22
- DOI
- https://doi.org/10.1021/acsphotonics.4c01087
- Citations
- 5
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- National Key Research and Development Program of China