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An organic cathode for low-temperature processed, flexible ternary organic solar cells with high-performance
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2024-08-27 , DOI: 10.1039/d4cp02513j Xia Liu 1 , Lei Wang 2 , Xi Liu 1 , Shuangcui Li 3 , Zhihai Liu 1 , Ping Chen 1
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2024-08-27 , DOI: 10.1039/d4cp02513j Xia Liu 1 , Lei Wang 2 , Xi Liu 1 , Shuangcui Li 3 , Zhihai Liu 1 , Ping Chen 1
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In this study, we developed a flexible cathode for fabricating high-performance ternary organic solar cells (OSCs). With solvent engineering and acid treatment, the conductivity of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) electrode was significantly enhanced with the sheet resistance reduced from 1081 to 83 Ω sq−1. After being coated with polyethylenimine, work function of the PEDOT:PSS electrode was tuned from −5.07 to −4.12 eV, which is beneficial for electron collection in OSCs. With this technique, the OSCs (on glass) showed an average power conversion efficiency (PCE) of 16.3%, which is comparable to that of conventional inverted OSCs with commonly used indium-tin oxide and sol–gel-processed zinc oxide. However, the processing temperature of the inverted OSCs was dramatically lowered from 200 to 120 °C. The flexible OSCs (on polyethylene naphthalate/PEDOT:PSS/PEIE) exhibited a high PCE of 14.1%. After being bended for 300 cycles, the PCE was only degraded by 8.5%, indicating the excellent bendability of the flexible OSCs with the organic cathode.
中文翻译：
用于低温加工的高性能柔性三元有机太阳能电池的有机阴极
在这项研究中，我们开发了一种用于制造高性能三元有机太阳能电池（OSC）的柔性阴极。通过溶剂工程和酸处理，聚(3,4-乙烯二氧噻吩):聚(苯乙烯磺酸)(PEDOT:PSS)电极的电导率显着增强，方块电阻从1081 Ω sq -1 降低至83 Ω sq -1 。涂覆聚乙烯亚胺后，PEDOT:PSS电极的功函数从-5.07调整到-4.12 eV，这有利于OSC中的电子收集。采用这种技术，OSC（玻璃上）的平均功率转换效率（PCE）为 16.3%，与常用的氧化铟锡和溶胶凝胶处理氧化锌的传统倒置 OSC 相当。然而，倒置OSC的加工温度从200°C大幅降低至120°C。柔性 OSC（聚萘二甲酸乙二醇酯/PEDOT:PSS/PEIE）表现出 14.1% 的高 PCE。弯曲300次循环后，PCE仅下降8.5%，表明有机阴极柔性OSC具有优异的弯曲性能。
更新日期：2024-08-27
中文翻译：
用于低温加工的高性能柔性三元有机太阳能电池的有机阴极
在这项研究中，我们开发了一种用于制造高性能三元有机太阳能电池（OSC）的柔性阴极。通过溶剂工程和酸处理，聚(3,4-乙烯二氧噻吩):聚(苯乙烯磺酸)(PEDOT:PSS)电极的电导率显着增强，方块电阻从1081 Ω sq -1 降低至83 Ω sq -1 。涂覆聚乙烯亚胺后，PEDOT:PSS电极的功函数从-5.07调整到-4.12 eV，这有利于OSC中的电子收集。采用这种技术，OSC（玻璃上）的平均功率转换效率（PCE）为 16.3%，与常用的氧化铟锡和溶胶凝胶处理氧化锌的传统倒置 OSC 相当。然而，倒置OSC的加工温度从200°C大幅降低至120°C。柔性 OSC（聚萘二甲酸乙二醇酯/PEDOT:PSS/PEIE）表现出 14.1% 的高 PCE。弯曲300次循环后，PCE仅下降8.5%，表明有机阴极柔性OSC具有优异的弯曲性能。
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