S-1805/Ag/Au Hybrid Transparent Electrodes for ITO-free Flexible Organic Photovoltaics

• 来源期刊: 高等学校化学研究（英文版）
• 年，卷（期）: 2019,（3）
• 页码范围: 509-513
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s40242-019-8269-4

摘要

We fabricated an S-1805/Ag/Au hybrid transparent electrode based on 4.4 nm ultrathin Au film,which exhibited a high transparency(T=78％ at 550 nm),a low sheet resistance(Rs=70 Ω/sq),and an extremely smooth surface(roughness=0.37 nm).The three-dimensional(3D) island growth mode of 4.4 nm Au film was resisted by the chemical bonding effect of the nonconductive S-1805 film and the wetting behavior of 0.6 nm Ag layer.The S-1805/Ag/Au hybrid transparent electrodes were used as the replacement of ITO anodes in flexible organic photovoltaics(OPVs),and the S-1805/Ag/Au-based OPVs resulted in the similar power conversion efficiency compared to ITO-based devices.High flexibility and mechanical robustness were demonstrated in the ITO-free OPVs without obvious degeneration in device performance after over 2000 repeated bending cycles.