Chandel Anjali, Wu Jia-Ren, Thakur Diksha, Kassou Said, Chiang Shou-En, Cheng Kai-Jen, Li Chung-Yu, Yen Yung-Sheng, Chen Sheng-Hui, Chang Sheng Hsiung
Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan, Republic of China.
R&D Center for Membrane Technology and Center for Nano Technology, Chung Yuan Christian University, Taoyuan 320314, Taiwan, Republic of China.
Nanotechnology. 2021 Sep 6;32(48). doi: 10.1088/1361-6528/ac1ec0.
Atomic-force microscopic images, x-ray diffraction patterns, Urbach energies and photoluminescence quenching experiments show that the interfacial contact quality between the hydrophobic [6,6]-phenyl-C-buttric acid methyl ester (PCBM) thin film and hydrophilic CHNHPbI(MAPbI) thin film can be effectively improved by using a binary antisolvent mixture (toluene:dichloromethane or chlorobenzene:dichloromethane) in the anti-solvent mixture-mediated nucleation process, which increases the averaged power conversion efficiency of the resultant PEDOT:PSS (P3CT-Na) thin film based MAPbIsolar cells from 13.18% (18.52%) to 13.80% (19.55%). Beside, the use of 10% dichloromethane (DCM) in the binary antisolvent mixture results in a nano-textured MAPbIthin film with multicrystalline micrometer-sized grains and thereby increasing the short-circuit current density and fill factor (FF) of the resultant solar cells. It is noted that a remarkable FF of 80.33% is achieved, which can be used to explain the stable photovoltaic performance without additional encapsulations.
原子力显微镜图像、X射线衍射图谱、乌尔巴赫能量和光致发光猝灭实验表明，在反溶剂混合物介导的成核过程中，通过使用二元反溶剂混合物（甲苯：二氯甲烷或氯苯：二氯甲烷），疏水性[6,6]-苯基-C-丁酸甲酯（PCBM）薄膜与亲水性CHNHPbI（MAPbI）薄膜之间的界面接触质量可得到有效改善，这使得基于所得PEDOT:PSS（P3CT-Na）薄膜的MAPbI太阳能电池的平均功率转换效率从13.18%（18.52%）提高到13.80%（19.55%）。此外，在二元反溶剂混合物中使用10%的二氯甲烷（DCM）会导致形成具有多晶微米尺寸晶粒的纳米纹理MAPbI薄膜，从而提高所得太阳能电池的短路电流密度和填充因子（FF）。值得注意的是，实现了80.33%的显著填充因子，这可用于解释无需额外封装即可实现的稳定光伏性能。
