材料科学
小分子
纳米技术
能量转换效率
限制
分子
分子间力
工程物理
光电子学
机械工程
物理
工程类
生物化学
量子力学
化学
作者
Samuel D. Collins,Niva A. Ran,Michael C. Heiber,Thuc‐Quyen Nguyen
标识
DOI:10.1002/aenm.201602242
摘要
Over the last 5 years, research on the synthesis, device engineering, and device physics of solution‐processed small molecule solar cells (SMSCs) has rapidly expanded. Improvements in molecular design and emergent device processing techniques have helped solution‐processed SMSCs overcome earlier difficulties in controlling active layer morphology, such that many systems are now at—or approaching—10% power conversion efficiency. In this review, details of the highest performing blend systems are presented in order to identify key trends and provide perspective on current progress in the field. Among the best systems, a planarized molecular structure is prevalent, which can be achieved using large fused‐ring moieties, intermolecular non‐bonding interactions, and side chain engineering. To obtain efficient devices, the highest performing systems have been optimized through the careful combination of thermal and solvent annealing procedures. Even without additional processing, some systems have been able to obtain interconnected morphologies and efficient charge generation and charge transport. Ultimately, the design of more efficient materials also requires additional understanding of the device physics and loss mechanisms. After highlighting what is known to date on processes limiting device efficiency, an outlook on the most important challenges remaining to the field is provided.
科研通智能强力驱动
Strongly Powered by AbleSci AI