Design and Simulation for Minimizing Non-Radiative Recombination Losses in CsGeI2Br Perovskite Solar Cells
Year: 2024
Type: article
Abstract: CsGeI2Br-based perovskites, with their favorable band gap and high absorption coefficient, are promising candidates for the development of efficient lead-free perovskite solar cells (PSCs). However, bulk and interfacial carrier non-radiative recombination losses hinder the further improvement of power conversion efficiency and stability in PSCs. To overcome this challenge, the photovoltaic potential of the device is unlocked by optimizing the optical and electronic parameters through rigorous numerical simulation, which include tuning perovskite thickness, bulk defect density, and series and shunt resistance. Additionally, to make the simulation data as realistic as possible, recombination processes, such as Auger recombination, must be considered. In this simulation, when the Auger capture coefficient is increased to 10−29 cm6 s−1, the efficiency drops from 31.62% (without taking Auger recombination into account) to 29.10%. Since Auger recombination is unavoidable in experiments, carrier losses due to Auger recombination should be included in the analysis of the efficiency limit to avoid significantly overestimating the simulated device performance. Therefore, this paper provides valuable insights for designing realistic and efficient lead-free PSCs.
Source: Nanomaterials
DOI: 10.3390/nano14201650
Authors: Tingxue Zhou, Xin Huang, Diao Zhang, Wei Liu, Xing’ao Li
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,296
Funders: National Natural Science Foundation of China, Ministry of Education of the People's Republic of China, Jiangsu University, China Postdoctoral Science Foundation, Nanjing University of Posts and Telecommunications, Nanjing University, Priority Academic Program Development of Jiangsu Higher Education Institutions
Awards: G1156402619, G1271487935, G1372318462, G137537213, G1525420941, G2661411328, G2739032175, G2744246258, G2829975174, G3442925522, 铁酸铋Z型异质结的构建及可见光催化分解水应用研究, G3622743782, G3680786369, G3938935197, G4178558875, G4216350489, G4348343524, G4773166720, G4844640782, G491310516, G4914282790, G5051990415, G5572152549, G5577529191, G5705272249, G5888799623, G6139618797, G6144340181, G6319561249, G7177951582, G7456700672, G7842313825, G8079638243, G8129721546, G8241094320, G8530130558, G8669721116, G927657594
OpenAlex ID: W4403397520