2D Layered (CH3NH3)3Sb2ClxI9−x Lead-Free Perovskite for Weak Light Detection

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2024-01-25 DOI:10.1007/s13391-023-00480-x

Amit Kumar Pathak, Sudip Mukherjee, Sudip K. Batabyal

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Abstract

Weak light detection is a current research topic and chlorine-containing lead-free perovskite materials are promising. In this research work, Cl-incorporated methylammonium Sb mixed halide perovskite (CH₃NH₃)₃ (Sb)₂(Cl)_X I_(9−X) derivatives were investigated for weak light detection. We have devised a solution-processable slow crystal growth (SCG) to fabricate 2D layered (CH₃NH₃)₃ (Sb)₂(Cl)_X I_(9−X) lead-free perovskite microcrystals. SCG facilitate only 1.51 atomic percent chlorine incorporation confirmed in FESEM-EDS analysis and band gap 1.98 eV determines the SCG grown lead-free perovskite molecular formula to be (CH₃NH₃)₃ (Sb)₂(Cl)_X I_(9−X). FTO/ (CH₃NH₃)₃ (Sb)₂(Cl)_X I_(9−X) PMCs/FTO self-powered photodetector detect 400 nm, 1µW cm⁻² weak optical signal. (CH₃NH₃)₃ (Sb)₂(Cl)_X I_(9−X) respond to weak optical signals in the 300–600 nm wavelength range. Also, (CH₃NH₃)₃ (Sb)₂(Cl)_X I_(9−X) exhibit a high reflectance (> 70%) for the wavelength above 600 nm with its inherent thermodynamic stability is a candidate for use as a reflective layer in tandem solar cells.

Graphical Abstract

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用于弱光探测的二维层状 (CH3NH3)3Sb2ClxI9-x 无铅过氧化物

摘要弱光探测是当前的一个研究课题，而含氯的无铅过氧化物材料很有前景。在这项研究工作中，研究了掺入氯的甲基铵锑混合卤化物包晶（CH3NH3）3 (Sb)2(Cl)X I(9-X)衍生物用于弱光探测。我们设计了一种溶液可处理慢速晶体生长（SCG）方法，用于制造二维层状 (CH3NH3)3 (Sb)2(Cl)X I(9-X)无铅包晶微晶。经 FESEM-EDS 分析确认，SCG 只促进了 1.51 原子%的氯掺入，而 1.98 eV 的带隙决定了 SCG 生长的无铅透辉石分子式为 (CH3NH3)3 (Sb)2(Cl)X I(9-X)。FTO/ (CH3NH3)3 (Sb)2(Cl)X I(9-X) PMCs/FTO 自供电光电探测器可检测到 400 纳米、1µW cm-2 的微弱光信号。(CH3NH3)3 (Sb)2(Cl)X I(9-X) 对 300-600 纳米波长范围内的微弱光信号做出响应。此外，(CH3NH3)3 (Sb)2(Cl)X I(9-X)在 600 纳米以上波长显示出较高的反射率（70%），其固有的热力学稳定性是串联太阳能电池中用作反射层的候选材料。图表摘要

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.