| Autor: |
Duong, Thanh-Tung, Tran, Phuong-Nam, Van, Tuan-Pham, Nguyen, Duy-Hung, Tran, Van-Dang |
| Zdroj: |
Electronic Materials Letters; Mar2024, Vol. 20 Issue 2, p217-223, 7p |
| Abstrakt: |
This study demonstrates a simple centrifugal coating method to prepare high-quality pure cubic phase CsPbBr3 nanocrystal film. The resultant perovskite layers possess a uniform and dense 500 nm-thick, with a bandgap of 2.38 eV, a low trap-state density of 6.9 × 10− 15 cm− 3, and carrier mobility of approximately 19.8 cm2V− 1s− 1. Furthermore, CsPbBr3 NCs-based self-powered photodetectors with high charge carriers' charge transfer are fabricated. The device shows a low dark current density of 1.93 × 10− 7 A/cm2 at room temperature. Such photodetectors show the highest responsivity of 3.0 AW− 1, specific detectivity of 1.2 × 1013 Jones, and external quantum efficiency (EQE) of 920% at zero bias voltage. The proposed method shows significant promise for use in the lab fabrication of optoelectronic devices based on thin films of nanocrystal perovskite materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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