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Phase Stabilized alpha-CsPbI3 Perovskite Nanocrystals for Photodiode Applications

Title
Phase Stabilized alpha-CsPbI3 Perovskite Nanocrystals for Photodiode Applications
Authors
Sim, Kyu MinSwarnkar, AbhishekNag, AngshumanChung, Dae Sung
DGIST Authors
Chung, Dae Sung
Issue Date
2018-01
Citation
Laser & Photonics Reviews, 12(1)
Type
Article
Article Type
Article
Keywords
SOLAR-CELLSHIGH-DETECTIVITYALPHA-CSPBI3 PEROVSKITEQUANTUM DOTSPHOTODETECTORSLIGHTHYSTERESISDIFFUSIONTRANSPORTPHOTOTRANSISTORS
ISSN
1863-8880
Abstract
High-performance and high-reliability photodiodes are demonstrated by using α-CsPbI3 perovskite nanocrystals (NCs) phase-stabilized with a low-temperature solution-treated active layer. In addition to the high charge mobility, the high absorption coefficient, and IR-blind characteristics of the perovskite material, the defect-tolerant nature of α-CsPbI3 perovskite NCs are combined to realize hysteresis-free and high detectivity photodiodes. To further minimize interface defects originating from multi-layer photodiode construction, a poly(3-hexylthiophene) layer is strategically introduced as a passivation and electron blocking layer, resulting in a low diode ideality factor of 1.5 and a noise equivalent power of 1.6 × 10−13 W Hz−0.5. As a result, high detectivity of 1.8 × 1012 Jones is demonstrated with near-zero hysteresis. Furthermore, the optimized photodiode exhibits excellent stability under high humidity conditions owing to the intrinsic nature of the defect-tolerant α-CsPbI3 perovskite NCs. © 2017 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
http://hdl.handle.net/20.500.11750/5599
DOI
10.1002/lpor.201700209
Publisher
WILEY-V C H VERLAG GMBH
Related Researcher
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringEco Energy Device Lab1. Journal Articles


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