CN

邢军

Professor

Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Education Level:博士研究生

Degree:工学博士

Discipline:Physical Chemistry

Paper Publications

准二维钙钛矿晶体中自限域激子发光机制研究

Release time:2024-01-19 Hits:

Key Words:准二维钙钛矿;自由激子;自限域激子;荧光;晶格形变

Abstract:通过冷却结晶法成功地合成了准二维钙钛矿(C_4H_(10)N)_2(CH_3NH_3)Pb_2Br_7晶体,并研究了该晶体的晶体结构以及自由激子和自限域激子复合发光行为。单晶XRD结构分析表明,该晶体中PbBr_6八面体单元具有极大的结构扭曲。通过光谱分析发现,该准二维钙钛矿材料在紫外光激发下表现为蓝色发光,并且具有两个荧光峰,峰位分别为440 nm和477 nm。其中,较强的荧光峰(440 nm)和较弱的荧光峰(477 nm)分别来源于准二维钙钛矿材料的自由激子和自限域激子的复合发光。该研究结果将有助于深入理解钙钛矿晶体中激子自限域过程和发光机制。

Volume:v.52;No.460

Issue:18

Translation or Not:no

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