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Performance analysis of MAPbI3 based perovskite solar cells employing diverse charge selective contacts: Simulation study
摘要： The rapid development in the field of organo-metal halide perovskite solar cells (PSCs) has led to the report of power conversion efficiency of > 25%. However, their large-scale deployment and possible commercialization endeavor are currently limited due to the presence of high-temperature processed electron transport material (ETM) such as TiO2 and the expensive hole transport material (HTM) in the state-of-the-art devices. By employing Solar Cell Capacitance Simulator (SCAPS)-1D, we attempted to propose low cost charge selective materials as ETM and HTM, which can deliver high photovoltaic performance. For this, the evaluation of TiO2, ZnO and SnO2 as ETMs was validated. Besides this, the role of thickness of ETMs was also investigated in a PSCs using CH3NH3PbI3 as light harvester and Spiro-OMeTAD as HTM. Our simulation results suggests that 90 nm of SnO2 layer outperforms as ETM for device fabrication. Furthermore, in our pursuit to avoid the usage of Spiro-OMeTAD, different organic and inorganic HTMs (P3HT, CuSbS2, Cu2O, CuSCN) have been investigated, and specifically the HTM thickness was optimized for high performance. We have found that by using the configuration of FTO/SnO2 (90 nm)/MAPbI3/CuSCN (100 nm)/Au a PCE of 26.74% with a Voc of 1180 mV can be acheived. The role of metal cathode work function was also studied to replace the expensive gold (Au) electrode.
关键词： Charge selective contacts,Hole transporting materials,Solar cells,Electron transporting materials,Perovskite
更新于2025-09-19 17:13:59
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Highly efficient mixed-halide mixed-cation perovskite solar cells based on rGO-TiO2 composite nanofibers
摘要： In this investigation, the electrospun reduced graphene oxide-titanium oxide composite nanofibers as an electron transporting materials have been employed for the perovskite solar cells. The synthesized electron transporting materials have been used for the fabrication of mixed-cation lead mixed-halide (FAPbI3)0.85(MAPbBr3)0.15 perovskite solar cells. The influence of reduced graphene oxide on titanium oxide nanofibers and their morphological and electronic properties have been investigated in detail. The optimized device having FTO/Bl-TiO2/rGO4–TiO2/(FAPbI3)0.85(MAPbBr3)0.15/spiro-MeOTAD/Au configuration exhibited 17.66 % power conversion efficiency with an open circuit voltage of 1.070 V, short circuit current density of 22.16 mAcm-2 and fill factor of 0.754. This obtained efficiency is much higher than that of mesoporous- titanium oxide (14.39 %), pristine- titanium oxide nanofibers (15.82 %) and other reduced graphene oxide- titanium oxide composite nanofibers based electron transporting materials.
关键词： electron transporting materials,large grain size,high-efficiency,Perovskite solar cells,role of rGO in TiO2 nanofibers
更新于2025-09-19 17:13:59
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?±-DTC <sub/>70</sub> fullerene performs significantly better than ?2-DTC70 as electron transporting material in perovskite solar cells
摘要： In this work, two new C70 isomers, α and β bis(2-(thiophen-2-yl)ethyl)-C70-fullerene mono-adducts (DTC70), were synthesized, characterized and used as electron transporting materials (ETMs) in perovskite solar cells (PSCs). Our results show that the α isomer improves both the Jsc and FF values of the devices, when compared to the results for the β-isomer and to those for phenyl-C70-butyric acid methyl ester (PC71BM), used as control. Devices based on α-DTC70 achieved a power conversion efficiency (PCE) of 15.9%, which is higher than that observed with PC71BM (15.1%).
关键词： perovskite solar cells,thiophene,Bingel adducts,fullerene derivatives,electron transporting materials
更新于2025-09-19 17:13:59