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Effects of TiCl4 post-treatment on the performance of hole transport material-free, screen printable mesoscopic perovskite solar cells with carbon electrode
摘要： The prevention of current leakage in perovskite solar cells is an effective method for improving performance of devices. In this work, we treated a surface of TiO2 compact layer by the way of hydrolyzing TiCl4 aqueous solution and have investigated the influence of TiCl4 post-treatment on the performance of hole transport material-free, screen printable mesoscopic perovskite solar cells with carbon electrode. The device, which fabricated by TiO2 compact layer post-treated with TiCl4 aqueous solution for 50 min, has achieved highest device performance, with a short-circuit current density of 23.28 mA cm-2, an open circuit voltage of 0.98 V, a fill factor of 0.65 and the power conversion efficiency of 14.83%. The improved device performance is attributed to inhibition of charge recombination at the fluorine-doped tin oxide/perovskite interface and improvement of charge transport ability of the TiO2 compact layer by TiCl4 post-treatment.
关键词： Hole transport material-free,Chemical bath deposition,Titanium tetrachloride post-treatment,One-step deposition,Perovskite solar cells
更新于2025-09-12 10:27:22
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Comparison of Efficiency analysis of Perovskite solar cell by altering Electron and Hole transporting layers
摘要： The methylamine lead halide perovskites as the light harvesting material in solar devices are emerging and promising due to their easy manufacturing process and large photovoltaic efficiency. Generally perovskite solar cells consist of a structure in which the perovskite light absorbing layer is sandwiched between electron and hole transporting layers (ETLs and HTLs). Herein we report four types of perovskite (CH3NH3PbBr3) solar cells which were fabricated in the absence and presence of electron transporting layer (Titanium dioxide (TiO2)) and hole transporting layer (2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-pirobifluorene (Spiro-OMeTAD)). Efficiency comparison analysis of fabricated solar cells was performed in the absence and presence of electron and hole transporting layers. All layers were deposited by spin-coating method. Different analysis using XRD, SEM, UV and IV measurements were carried out for all samples. Maximum power conversion efficiency of 13.8 % was obtained.
关键词： Hole transport material free,mesoporous Titanium dioxide,Perovskite solar cell,photovoltaic technology
更新于2025-09-12 10:27:22