The Impact of Local Morphology on Organic Donor/Acceptor Charge Transfer States,Advanced Energy Materials

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The Impact of Local Morphology on Organic Donor/Acceptor Charge Transfer States
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-01-17 , DOI: 10.1002/aenm.201702816
YunHui L. Lin ₁ , Michael A. Fusella ₁ , Barry P. Rand _{1,

2}

Affiliation

A major breakthrough in the field of organic photovoltaics (OPVs) was the development of the donor/acceptor heterojunction that aids in separating Coulombically bound excitons that are generated upon photoabsorption. Additionally, bound charge transfer (CT) states that result from the exchange of charge carriers across the donor/acceptor interface are believed to play an important role in charge generation. Though organic thin films are often disordered, enhancements to the local structural order at the donor/acceptor interface have recently been shown to greatly influence CT state energetics and the charge generation process. In this progress report, recent efforts to understand the role that donor/acceptor morphology plays in the behavior of CT states and the resulting implications on OPV function are presented. It is aimed to provide a survey of different experimental approaches and to present a balanced examination of current interpretations of key results, and to offer best practices for the fabrication and study of morphologically tunable donor/acceptor CT states.

中文翻译：

局部形态对有机供体/受体电荷转移态的影响

有机光伏（OPV）领域的一项重大突破是施主/受主异质结的发展，该结构有助于分离光吸收时产生的库伦结合的激子。另外，据信由跨供体/受体界面的电荷载流子交换产生的束缚电荷转移（CT）状态在电荷产生中起重要作用。尽管有机薄膜通常无序，但最近显示出供体/受体界面处局部结构顺序的增强极大地影响了CT状态的能量学和电荷产生过程。在此进展报告中，介绍了最近的一些工作，以了解供体/受体形态在CT状态行为中的作用以及由此产生的对OPV功能的影响。

更新日期：2018-01-17

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