A graph-based formulation for computational characterization of bulk heterojunction morphology
作者: Olga WodoSrikanta TirthapuraSumit ChaudharyBaskar Ganapathysubramanian
作者单位: 1Department of Mechanical Engineering, Iowa State University, Ames, IA, United States
2Department of Electrical and Computer Engineering, Iowa State University, Ames, IA, United States
3Department of Materials Science and Engineering, Iowa State University, Ames, IA, United States
刊名: Organic Electronics, 2012, Vol.13 (6), pp.1105-1113
来源数据库: Elsevier Journal
DOI: 10.1016/j.orgel.2012.03.007
关键词: Bulk heterojunctionOrganic solar cellsPhotovoltaicMorphologyCharacterizationGraph theory
英文摘要: Abstract(#br)To improve the efficiency of organic solar cells, it is essential to understand the role of morphology and to tailor fabrication process to get desired morphologies. In this context, a comprehensive set of computational tools to quantify and classify the 2D/3D heterogeneous internal structure of thin films is invaluable. We present a graph-based framework to efficiently compute a broad suite of physically meaningful morphology descriptors. These morphology descriptors are further classified according to the physical subprocesses within OSCs – photon absorption, exciton diffusion, charge separation, and charge transport. This approach is motivated by the equivalence between a discretized 2D/3D morphology and a labeled , weighted , undirected graph . We utilize this approach to...
全文获取路径: Elsevier  (合作)
影响因子:3.836 (2012)