Theoretical analysis and the morphology control of vertical phase segregation in high efficiency polymer/fullerene solar cells
- 作者：Bowen Gao
- 会议时间：2013-10-01
- 关键词：organic solar cells ; bulk heterojunction ; vertical phase separation ; conventional structure solar cells ; inverted configuration solar cells
- 作者单位：State Key Laboratory of Transient Optics and Photonics.Xi'an Institute of Optics and precision Mechanics,Chinese Academy of Science (CAS) Xi'an Shaanxi.710119,People's Republic of China;School ofElectronics and Information Engineering,Xi'an Jiaotong University,Xi'an 710049,People's Republic of China
- 母体文献：第十一届全国博士生学术年会专题——节能环保与污染防治技术分会场论坛论文集
- 会议名称：第十一届全国博士生学术年会专题——节能环保与污染防治技术分会场论坛
- 会议地点：成都
- 主办单位：中国环境科学学会
- 语种：chi
摘要
The morphology control and optimization in the film-forming process and nanoscale phase separation of donor/acceptor interpenetrating networks played an important role in improving the performance of organic solar cells.Vertical phase separation was defined as an inhomogeneous distribution or concentration gradient of polymer/fullerene blends in the spin-coated film,due to the surface energy of the respective components and their interaction with the substrate or the intermediate buffer layers.ln this report,we demonstrated,in detail,the theory of vertical phase separation morphology control of conventional structure solar cells and inverted configuration solar cells,including the choice of solvents and the drying rate,the surface energy control,thermal annealing,as well as external electric field.In particular,we first proposed internal electronic field model of vertical phase separation and revealed the intemal rules and organic semiconductor physics and its mechanism for improving the device efficiency and stability.