k掺杂(CH(NH2)2)x(CH3NH3)1-xPbI3钙钛矿吸收剂在能量收集中的适用性

IF 0.6 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI:10.56042/ijpap.v61i10.2460

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引用次数: 0

摘要

由于其更高的热稳定性，基于碘化甲醛铅(FAPbI3)的钙钛矿太阳能电池比基于甲基铵的太阳能电池更有前景。但FAPbI3薄膜在室温下面临着严重的光活性相不稳定性问题，阻碍了其作为钙钛矿太阳能电池(PSCs)吸收剂的应用。最近，这个问题已经通过增材工程得到了很好的解决。本文通过MA+(甲胺阳离子)和K+(钾阳离子)的混合，对FAPbI3钙钛矿进行了一价阳离子工程。本文详细分析了阳离子掺杂对甲脒基钙钛矿材料结构和光学性能的影响。结构和光学表征表明，阳离子混合对钙钛矿薄膜的相稳定、结晶和吸光度有积极的影响。晶粒尺寸随着掺杂的增加而增大，在K0.05(FA0.83MA0.17 -)0.95PbI3样品中晶粒尺寸最大。同时，在电磁光谱的紫外可见区，也观察到掺杂后吸光度的增加。

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Suitability of K-doped (CH(NH2)2)x(CH3NH3)1-xPbI3 Perovskite Absorber for Energy Harvesting

Formamidinium lead iodide (FAPbI3) based perovskite solar cells are more promising than methylammonium based counterparts due to their higher thermal stability. But FAPbI3 film faces serious issue of photoactive phase instability at room temperature, hindering its usefulness as absorber in perovskite solar cells (PSCs). Recently, this problem has been well addressed through additive engineering. In this work, monovalent-cation engineering of FAPbI3 perovskite via MA+ (methylamine cation) and K+ (potassium cation) mixing is performed. We present a detailed analysis of effect of cation doping on structural and optical properties of formamidine based perovskite material. The structural and optical characterizations show positive effect of cation mixing on phase stabilization, crystallization, and absorbance of perovskite thin films. The crystallite size is found to increase on doping with a maximum for K0.05(FA0.83MA0.17)0.95PbI3 sample. Also, the rise in absorbance in UV-Visible region of electromagnetic spectra is observed with doping.

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来源期刊

Indian Journal of Pure & Applied Physics 物理-物理：综合

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

7 months

期刊介绍： Started in 1963, this journal publishes Original Research Contribution as full papers, notes and reviews on classical and quantum physics, relativity and gravitation; statistical physics and thermodynamics; specific instrumentation and techniques of general use in physics, elementary particles and fields, nuclear physics, atomic and molecular physics, fundamental area of phenomenology, optics, acoustics and fluid dynamics, plasmas and electric discharges, condensed matter-structural, mechanical and thermal properties, electronic, structure, electrical, magnetic and optical properties, cross-disciplinary physics and related areas of science and technology, geophysics, astrophysics and astronomy. It also includes latest findings in the subject under News Scan.