材料科学
能量转换效率
吸光度
薄膜
太阳能电池
光电子学
拉曼光谱
光伏系统
分析化学(期刊)
光致发光
聚合物太阳能电池
光学
纳米技术
化学
物理
生态学
色谱法
生物
作者
Shou-En Chiang,Qi-Bin Ke,Anjali Chandel,Hsin‐Ming Cheng,Yung‐Sheng Yen,Ji‐Lin Shen,Sheng Hsiung Chang
出处
期刊:Polymers
[Multidisciplinary Digital Publishing Institute]
日期:2021-03-13
卷期号:13 (6): 886-886
被引量:19
标识
DOI:10.3390/polym13060886
摘要
A high-efficiency inverted-type CH3NH3PbI3 (MAPbI3) solar cell was fabricated by using a ultrathin poly[3-(4-carboxybutyl)thiophene-2,5-diyl]-Na (P3CT-Na) film as the hole transport layer. The averaged power conversion efficiency (PCE) can be largely increased from 11.72 to 18.92% with a double-filtering process of the P3CT-Na solution mainly due to the increase in short-circuit current density (JSC) from 19.43 to 23.88 mA/cm2, which means that the molecular packing structure of P3CT-Na thin film can influence the formation of the MAPbI3 thin film and the contact quality at the MAPbI3/P3CT-Na interface. Zeta potentials, atomic-force microscopic images, absorbance spectra, photoluminescence spectra, X-ray diffraction patterns, and Raman scattering spectra are used to understand the improvement in the JSC. Besides, the light intensity-dependent and wavelength-dependent photovoltaic performance of the MAPbI3 solar cells shows that the P3CT-Na thin film is not only used as the hole transport layer but also plays an important role during the formation of a high-quality MAPbI3 thin film. It is noted that the PCE values of the best P3CT-Na based MAPbI3 solar cell are higher than 30% in the yellow-to-near infrared wavelength range under low light intensities. On the other hand, it is predicted that the double-filtering method can be readily used to increase the PCE of polymer based solar cells.
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