Hole- and electron-only transport in ratio-controlled organic co-deposited films observed by impedance spectroscopy
Hole- and electron-only transport in ratio-controlled organic co-deposited films observed by impedance spectroscopy
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DOI：
10.1016/j.orgel.2017.08.020
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发表时间：
2017-11-01
影响因子：
3.2
通讯作者：
Hiramoto, Masahiro
中科院分区：
文献类型：
--
作者：
Shintaku, Naoto;Izawa, Seiichiro;Hiramoto, Masahiro
用阻抗谱测量了共沉积薄膜中无金属的酞菁和富勒烯的比例对共沉积薄膜的迁移率、深陷阱寿命以及空穴和纯电子器件的范围的影响。载流子的范围与共沉积分子的比例无关。提出了一种多重陷阱模型，在该模型中，共沉积分子的无序产生了控制迁移率的浅陷阱。观察到很长的空穴和电子范围为0.34 mm和9.4 mm，足以从有机光伏电池的共沉积薄膜中提取载流子。(C)2017爱思唯尔B.V.保留所有权利。
The dependences of the mobility, the lifetime of deep traps and the range for hole-and electron-only devices on the ratio of metal-free phthalocyanine and fullerene in co-deposited films were measured by impedance spectroscopy. The ranges of the carriers were shown to be independent of the ratio of the co-deposited molecules. A multiple trapping model in which the disorder of the co-deposited molecules gives rise to shallow traps that dominate the mobility is proposed. Very long hole and electron ranges of 0.34 and 9.4 mm, which are long enough to extract carriers from co-deposited films in organic photovoltaic cells, were observed. (C) 2017 Elsevier B.V. All rights reserved.