The Nanoscale Structure and Stability of Organic Photovoltaic Blends Processed with Solvent Additives

Author:

Kilbride Rachel C.12ORCID,Spooner Emma L. K.23ORCID,Burg Stephanie L.2ORCID,Oliveira Bárbara L.4ORCID,Charas Ana4ORCID,Bernardo Gabriel56ORCID,Dalgliesh Robert7ORCID,King Stephen7ORCID,Lidzey David G.2ORCID,Jones Richard A. L.8ORCID,Parnell Andrew J.2ORCID

Affiliation:

1. Department of Chemistry The University of Sheffield Dainton Building, Brook Hill Sheffield S3 7HF United Kingdom

2. Department of Physics and Astronomy The University of Sheffield Hicks Building, Hounsfield Road Sheffield S3 7RH United Kingdom

3. The Photon Science Institute The University of Manchester Oxford Road Manchester M13 9PY United Kingdom

4. Instituto de Telecomunicações Instituto Superior Técnico Av. Rovisco Pais Lisboa P‐1049‐001 Portugal

5. LEPABE – Laboratory for Process Engineering Environment Biotechnology and Energy Faculty of Engineering University of Porto Porto 4200–465 Portugal

6. ALiCE – Associate Laboratory in Chemical Engineering Faculty of Engineering University of Porto Porto 4200–465 Portugal

7. ISIS Neutron and Muon Spallation Source Rutherford Appleton Laboratories Oxfordshire OX11 0QX United Kingdom

8. Department of Materials The University of Manchester Sackville Street Building Manchester M1 3BB United Kingdom

Abstract

AbstractControlling the nanomorphology in bulk heterojunction photoactive blends is crucial for optimizing the performance and stability of organic photovoltaic (OPV) technologies. A promising approach is to alter the drying dynamics and consequently, the nanostructure of the blend film using solvent additives such as 1,8‐diiodooctane (DIO). Although this approach is demonstrated extensively for OPV systems incorporating fullerene‐based acceptors, it is unclear how solvent additive processing influences the morphology and stability of nonfullerene acceptor (NFA) systems. Here, small angle neutron scattering (SANS) is used to probe the nanomorphology of two model OPV systems processed with DIO: a fullerene‐based system (PBDB‐T:PC71BM) and an NFA‐based system (PBDB‐T:ITIC). To overcome the low intrinsic neutron scattering length density contrast in polymer:NFA blend films, the synthesis of a deuterated NFA analog (ITIC‐d52) is reported. Using SANS, new insights into the nanoscale evolution of fullerene and NFA‐based systems are provided by characterizing films immediately after fabrication, after thermal annealing, and after aging for 1 year. It is found that DIO processing influences fullerene and NFA‐based systems differently with NFA‐based systems characterized by more phase‐separated domains. After long‐term aging, SANS reveals both systems demonstrate some level of thermodynamic induced domain coarsening.

Funder

Engineering and Physical Sciences Research Council

National Science Foundation

Publisher

Wiley

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3