DataVXAdvanced Optical MaterialsPaper
journal article·2021-11

Cerium‐Doped Perovskite Nanocrystals for Extremely High‐Performance Deep‐Ultraviolet Photoelectric Detection

Dongyu Li, Wen Xu, Donglei Zhou, Yanan Ji, Nan Ding, Xu Chen, Jinyang Zhu, Rui Sun, Siyu Lu, Chonggeng Ma, Zhixu Jia, Guanshi Qin, Xue Bai, Hongwei Song

Advanced Optical Materials· Volume 9· Issue 22
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Source abstract

Abstract

Abstract In this study, a novel deep‐ultraviolet photodetector (DUVPD) based on the hybrids of solution‐processed CsPbX3 (X = Cl, Br):Ce3+ perovskite nanocrystals (PNCs) and plasmonic Al film is presented. The optical absorption strength of the CsPbX3:Ce3+ PNCs is improved by one order of magnitude in the solar‐blind DUV range (200–280 nm) compared with the undoped. First‐principles calculations and Dorenbos's 4f and 5d host referred binding energy (HRBE) models prove that such an improvement results from the 4f–5d transition of Ce3+. The presence of Al film further improves the optical absorption strength in this DUV range due to the plasmonic effect and the metal−perovskite junction between Al film and perovskite. Finally, the DUVPDs based on CsPbCl3:Ce3+/Al hybrids demonstrate extremely high detectivity of 4 × 1013 Jones. This work is the first approach to build up high‐performance DUVPDs based on the doped PNCs.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Ga2O3 and related materials · Luminescence Properties of Advanced Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 China

Department of Electrical and Electronic Engineering The University of Hong Kong Pokfulam Road Hong Kong SAR 999077 China

School of Physics and Materials Engineering Dalian Minzu University 18 Liaohe West Road Dalian 116600 China

Key Laboratory of Material Physics Ministry of Education School of Physics and Microelectronics Zhengzhou University Zhengzhou 450052 China

State Centre for International Cooperation on Designer Low‐Carbon & Environmental Materials School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 P. R. China

Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450000 P. R. China

CQUPT‐BUL Innovation Institute Chongqing University of Posts and Telecommunications Chongqing 400065 P. R. China

Funding

National Natural Science Foundation of China

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