材料科学
光活性层
聚合物
能量转换效率
热稳定性
化学工程
形态学(生物学)
沉积(地质)
聚合物太阳能电池
相(物质)
光伏系统
透射电子显微镜
纳米技术
光电子学
复合材料
化学
有机化学
工程类
古生物学
沉积物
生物
遗传学
生态学
作者
Kang An,Wenkai Zhong,Chunguang Zhu,Feng Peng,Li Xu,Lin Zhang,Lei Wang,Cheng Zhou,Lei Ying,Ning Li,Fei Huang
标识
DOI:10.1088/1674-4926/44/5/052201
摘要
Abstract Due to the complicated film formation kinetics, morphology control remains a major challenge for the development of efficient and stable all-polymer solar cells (all-PSCs). To overcome this obstacle, the sequential deposition method is used to fabricate the photoactive layers of all-PSCs comprising a polymer donor PTzBI-oF and a polymer acceptor PS1. The film morphology can be manipulated by incorporating amounts of a dibenzyl ether additive into the PS1 layer. Detailed morphology investigations by grazing incidence wide-angle X-ray scattering and a transmission electron microscope reveal that the combination merits of sequential deposition and DBE additive can render favorable crystalline properties as well as phase separation for PTzBI-oF:PS1 blends. Consequently, the optimized all-PSCs delivered an enhanced power conversion efficiency (PCE) of 15.21% along with improved carrier extraction and suppressed charge recombination. More importantly, the optimized all-PSCs remain over 90% of their initial PCEs under continuous thermal stress at 65 °C for over 500 h. This work validates that control over microstructure morphology via a sequential deposition process is a promising strategy for fabricating highly efficient and stable all-PSCs.
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