The Next Breakthrough for Organic Photovoltaics?

被引：117

作者：

Jackson, Nicholas E. ^{[1
]}

Savoie, Brett M. ^{[1
]}

Marks, Tobin J. ^{[1
]}

Chen, Lin X. ^{[1
]}

Ratner, Mark A. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2015年 / 6卷 / 01期

关键词：

POLYMER SOLAR-CELLS; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYMERS; SEMICONDUCTING POLYMERS; EFFICIENCY; PERFORMANCE; MORPHOLOGY; ENHANCEMENT; DYNAMICS; RIGIDITY;

D O I：

10.1021/jz502223t

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

While the intense focus on energy level tuning in organic photovoltaic materials has afforded large gains in device performance, we argue here that strategies based on microstructural/morphological control are at least as promising in any rational design strategy. In this work, a meta-analysis of similar to 150 bulk heterojunction devices fabricated with different materials combinations is performed and reveals strong correlations between power conversion efficiency and morphology-dominated properties (short-circuit current, fill factor) and surprisingly weak correlations between efficiency and energy level positioning (open-circuit voltage, enthalpic offset at the interface, optical gap). While energy level positioning should in principle provide the theoretical maximum efficiency, the optimization landscape that must be navigated to reach this maximum is unforgiving. Thus, research aimed at developing understanding-based strategies for more efficient optimization of an active layer microstructure and morphology are likely to be at least as fruitful.

引用

页码：77 / 84

页数：8

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