Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.
ACS Appl Mater Interfaces. 2016 Dec 14;8(49):33856-33862. doi: 10.1021/acsami.6b11636. Epub 2016 Nov 30.
Inverted polymer solar cells incorporating solution-processed zirconium acetylacetonate (ZrAcac) buffer layers were demonstrated. The optimal device delivered a power conversion efficiency up to 9.2%, displaying ∼20% improvement compared with the device of conventional configuration. The performance improvement by adopting ZrAcac as the cathode buffer layer is attributed to the enhanced light-harvesting, facilitated electron transport, and reduced bimolecular recombination loss. The morphology of ZrAcac buffer layer was found to be critical in achieving high performance, which was tunable through the selection of processing solvents. A flat and uniform ZrAcac film consisting of ∼20 nm nanoscale aggregates deposited from a chloroform solution was proved to be highly effective, which only requires a short light-soaking time.
采用溶液法制备的锆乙酰丙酮盐（ZrAcac）作为缓冲层的倒置聚合物太阳能电池得到了展示。优化后的器件获得了高达 9.2%的功率转换效率，与传统结构的器件相比，效率提高了约 20%。采用 ZrAcac 作为阴极缓冲层可以提高器件性能，这归因于它增强了光吸收、促进了电子传输并减少了双分子复合损失。研究发现，ZrAcac 缓冲层的形态对于获得高性能至关重要，其可以通过选择不同的处理溶剂来进行调控。由氯仿溶液沉积得到的、约 20nm 纳米级聚集体组成的平整、均匀的 ZrAcac 薄膜非常有效，它只需要较短的光浸泡时间。
