CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 9567 > Article
Presentation
5 October 2015 Morphological study on small molecule acceptor-based organic solar cells with efficiencies beyond 7% (Presentation Recording)
Wei Ma, He Yan
Author Affiliations +
Proceedings Volume 9567, Organic Photovoltaics XVI; 956710 (2015) https://doi.org/10.1117/12.2189746
Event: SPIE Organic Photonics + Electronics, 2015, San Diego, California, United States
Abstract
Despite the essential role of fullerenes in achieving best-performance organic solar cells (OSCs), fullerene acceptors have several drawbacks including poor light absorption, high-cost production and purification. For this reason, small molecule acceptor (SMA)-based OSCs have attracted much attention due to the easy tunability of electronic and optical properties of SMA materials. In this study, polymers with temperature dependent aggregation behaviors are combined with various small molecule acceptor materials, which lead to impressive power conversion efficiencies of up to 7.3%. The morphological and aggregation properties of the polymer:small molecule blends are studied in details. It is found that the temperature-dependent aggregation behavior of polymers allows for the processing of the polymer solutions at moderately elevated temperature, and more importantly, controlled aggregation and strong crystallization of the polymer during the film cooling and drying process. This results in a well-controlled and near-ideal polymer:small molecule morphology that is controlled by polymer aggregation during warm casting and thus insensitive to the choice of small molecules. As a result, several cases of highly efficient (PCE between 6-7.3%) SMA OSCs are achieved. The second part of this presentation will describe the morphology of a new small molecule acceptor with a unique 3D structure. The relationship between molecular structure and morphology is revealed.
Conference Presentation
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Wei Ma and He Yan "Morphological study on small molecule acceptor-based organic solar cells with efficiencies beyond 7% (Presentation Recording)", Proc. SPIE 9567, Organic Photovoltaics XVI, 956710 (5 October 2015); https://doi.org/10.1117/12.2189746
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Molecules
Polymers
Molecular aggregates
Organic photovoltaics
Solar cells
Fullerenes
Shape memory alloys
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top