期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 44, 页码 24663-24669出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b06964
关键词
organic photovoltaics; p-DTS(FBTTh2)(2); solution processable small molecule; filming properties; dewetting
资金
- ARMOR Company
- French CNRS
- ANRT
- HELIOS [ANR-13-PRGE-0006]
In organic photovoltaic (PV) devices based on solution-processed small molecules, we report here that the physicochemical properties of the substrate are critical for achieving high-performances organic solar cells. Three different substrates were tested: ITO coated with PEDOT:PSS, ZnO sol gel, and ZnO nanoparticles. PV performances are found to be low when the ZnO nanoparticles layer is used. This performance loss is attributed to the formation of many dewetting points in the active layer, because of a relatively high roughness of the ZnO nanoparticles layer, compared to the other layers. We successfully circumvented this phenomenon by adding a small quantity of polystyrene (PS) in the active layer. The introduction of PS improves the quality of film forming and reduces the dark currents of solar cells. Using this method, high-efficiency devices were achieved, even in the case of substrates with higher roughness.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据