Ligand induced phase-controlled synthesis of copper halide perovskite nanocrystals towards tunable white light emission

被引：1
作者：
Wu, Haoyu [1 ]
Yin, Hong [1 ]
Wang, Zhongyi [1 ]
Xu, Xin [1 ]
Zhang, Ruiling [1 ]
机构：
[1] Shandong Univ, Inst Mol Sci & Engn, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2023年 / 819卷
关键词：
Lead-free; Photoluminescence; Controlled-phase; Low-dimensional; Excitation-dependent emission;
D O I：
10.1016/j.cplett.2023.140446
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Recently, copper halides have attracted considerable interest for their excellent photoluminescence properties, low-cost and non-toxicity. Herein, we report the phase control in the synthesis of Cs3Cu2I5 and CsCu2I3 nano-crystals. The crystalline phase of the products can be tuned by changing the volume ratio of the ligand pair of oleic acid (OA) and oleylamine (OLA). Blue-emissive Cs3Cu2I5 and yellow-emissive CsCu2I3 nanocrystals can be obtained with the ratio of OA/OLA of 0.5:0.5 and 1:0.6, respectively. Interestingly, the composite of Cs3Cu2I5 and CsCu2I3 with ratio of OA/OLA of 1:0.8 exhibits tunable white light emission from cold white to pure white to neutral white.
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页数：5
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