The simple structure and processing, low fabrication cost and high stability of the hole transport material (HTM)-free perovskite solar cells (PSCs) have great importance nowadays. In this study, an efficient and novel HTM-free PSC structure where CH₃NH₃Pb(I_1-xCl_x)₃/FA_0.75Cs_0.25Pb_0.5Sn_0.5I₃ (where FA is formamidinium) acts as a light harvester, WS₂ acts as an electron transport material (ETM) and carbon acts as the back electrode is proposed and was investigated numerically with the SCAPS-1D simulation tool. Initially three device structures having bare CH₃NH₃Pb(I_1-xCl_x)₃, CH₃NH₃Pb(I_1-xCl_x)₃/CsSnI₃ and CH₃NH₃Pb(I_1-xCl_x)₃/FA_0.75Cs_0.25Pb_0.5Sn_0.5I₃ absorbing layers with ZnO as an ETM were studied, and it was observed that among them the power conversion efficiency (PCE) of the CH₃NH₃Pb(I_1-xCl_x)₃/FA_0.75Cs_0.25Pb_0.5Sn_0.5I₃-based device was the greatest. Also various ETMs and solar cell layer parameters, such as absorber thickness, defect density and doping concentration, were varied to obtain their optimum values. The optimum performance of the device thus achieved is V_OC = 0.82 V, J_SC = 31.94 mA/cm², a fill factor of 77.95% and PCE of 20.53% with carbon as the back contact and V_OC = 0.84 V, J_SC = 34.34 mA/cm², a fill factor of 78.54% and PCE of 22.72% with gold as the back contact. These simulation results indicate that the proposed new HTM-free PSC is quite efficient for photovoltaic applications.

如今，无空穴传输材料（HTM）的钙钛矿太阳能电池（PSC）的简单结构和加工，低制造成本以及高稳定性非常重要。在这项研究中，CH ₃ NH ₃ Pb（I _{1- x} Cl _x）₃ / FA _0.75 Cs _0.25 Pb _0.5 Sn _0.5 I ₃（FA为甲ami）的高效且无H​​TM的PSC结构可作为光收集器WS ₂作为电子传输材料（ETM）和碳作为背电极，人们提出并用SCAPS-1D模拟工具对其进行了数值研究。最初具有裸露的CH ₃ NH ₃ Pb（I _{1- x} Cl _x）₃，CH ₃ NH ₃ Pb（I _{1- x} Cl _x）₃ / CsSnI ₃和CH ₃ NH ₃ Pb（I _{1- x} Cl ）的三个器件结构_x）₃ / FA _0.75 Cs _0.25 Pb _0.5 Sn _0.5研究了以ZnO作为ETM的I ₃吸收层，发现其中CH ₃ NH ₃ Pb（I _{1- x} Cl _x）₃ / FA _0.75 Cs _0.25 Pb _0.5 Sn的功率转换效率（PCE）基于_0.5 I ₃的设备最大。还改变了各种ETM和太阳能电池层参数，例如吸收体厚度，缺陷密度和掺杂浓度，以获得其最佳值。这样获得的器件的最佳性能是V _OC  = 0.82 V，J _SC  = 31.94 mA / cm²，77.95％的填充因子和20.53％PCE与碳作为背接触和V _OC  = 0.84 V，Ĵ _SC  =34.34毫安/厘米²，78.54％的填充因子和22.72％PCE用金作为背接触。这些仿真结果表明，提出的新型无HTM的PSC对于光伏应用非常有效。