The impact of charge carrier dynamics on the outdoor performance of cesium-lead-halide perovskite photovoltaics

被引：0
作者：
Meheretu, Getnet M. [1 ,2 ]
Yihunie, Moges T. [2 ]
Wubetu, Getasew A. [1 ,2 ,3 ]
机构：
[1] Bahir Dar Univ, Bahir Dar Inst Technol, Bahir Dar Energy Ctr, Bahir Dar, Ethiopia
[2] Bahir Dar Univ, Coll Sci, Dept Phys, Bahir Dar, Ethiopia
[3] Addis Ababa Univ, Coll Nat & Computat Sci, Dept Phys, Addis Ababa, Ethiopia
来源：
PHYSICA SCRIPTA | 2024年 / 99卷 / 11期
基金：
英国工程与自然科学研究理事会;
关键词：
cesium halide; tunable band gap; performance; recombination; carrier dynamics; SOLAR-CELLS; STABILITY;
D O I：
10.1088/1402-4896/ad85af
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigated the optoelectronic characteristics of cesium-based perovskite using various techniques. The steady-state photoluminescence (PL) spectroscopy of this perovskite solar cell composition shows the presence of strong peaks at a wavelength of 759 nm, which that corresponds to a band gap energy 1.63 eV. This band gap energy was estimated using two complementary methods, the PL emission spectra and the UV-vis absorption spectra. The study describes the dependence of photon energy on wavelength using a Gaussian mathematical model. Real-outdoor performance testing was conducted in Ethiopia's climate during the hottest seasons to study the device performance under outdoor conditions at varying irradiances. Moreover, we investigated power generation from the devices using current-time measurements and analyzed charge carrier dynamics through transient photocurrent measurements.
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页数：12
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