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Please use this identifier to cite or link to this item: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/7049

Titre: Energy Down-Conversion Cs3Cu2Cl5 nanocrystals for boosting the efficiency of UV photodetector
Auteur(s): Liu, Chengjun
Wang, Lixi
Fang, Fan
Zhao, Zihan
Pan, Jiangyong
Akram, Javed Akram
Bin Shafie, Suhaidi
Zair Talaighila, Razika
Li, Qing
Zhao, Zhiwei
Wu, Jun
Zhu, Zhuoya
Lei, Wei
Zhang, Xiaobing
Chen, Jing
Mots-clés: All-inorganic perovskite nanocrystals
Lead-free perovskite
Ligand-assisted
Photoluminescence quantum yield
Stability
Issue Date: 2021
Collection/Numéro: Frontiers in Materials/ Vol.8 (2021);pp. 1-8
Résumé: Zero-dimension (0-D) lead halide perovskite nanocrystals (NCs) have attracted a sight of interest in the field of optoelectronic devices due to their outstanding properties, such as high photoluminescence quantum yield (PLQY) and size- and composition-controlled tunable emission wavelengths. However, the toxicity of lead (Pb) element in the lead perovskite NCs is the bottleneck for the commercial application of perovskite NCs. Herein, we report a facile ligand-assisted synthesis to achieve lead-free Cs3Cu2Cl5 NCs with a high PLQY of ∼70% and good stability against environmental oxygen/moisture as a promising down-conversion material. It has good merits of high PLQY and large Stokes shift (∼300 nm) originated from the effect of Jahn–Teller distortion and self-trapped excitons (STEs). Furthermore, the Cs3Cu2Cl5 NCs embedded composite films (NCCFs) were utilized to enhance the ultraviolet (UV) response of silicon (Si) photodetectors. External quantum efficiency (EQE) measurements show that the UV response can be greatly improved from 3.3 to 19.9% @ 295 nm based on NCCFs combined with Si photodiodes. Our work offers an effective approach to develop highly efficient and stable lead-free Cs3Cu2Cl5 NCs for the application in the solar-blind UV photodetector
URI: https://www.x-mol.com/paper/1382106077085065216?adv
DOI: 10.3389/fmats.2021.682833
http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/7049
ISSN: 22968016
Appears in Collections:Publications Internationales

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