Vacuum-Deposited Organic Solar Cells Based on a Dicyanovinyl-Terminated Small-Molecule Donor
- Title
- Vacuum-Deposited Organic Solar Cells Based on a Dicyanovinyl-Terminated Small-Molecule Donor
- Author
- 정인환
- Keywords
- vacuum-deposited organic solar cells; planar-mixed heterojunction; push-pull; small molecule donor
- Issue Date
- 2019-05
- Publisher
- POLYMER SOC KOREA
- Citation
- MACROMOLECULAR RESEARCH, v. 27, no. 5, page. 444-447
- Abstract
- The design and synthesis of photoactive semiconducting materials with an appropriate band gap and charge transport properties are crucial for developing vacuum-deposited organic solar cells (VD-OSCs). In this work, we synthesized a novel conjugated material, 2,2-(((4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b]dithiophene-2,6-diyl)bis([2,2-bithiophene]-5,5-diyl))bis(methanylylidene))dimalononitrile (BBTBDTM), with a symmetric A--D--A architecture. BBTBDTM contains benzodithiophene as the central donor (D), bithiophene as the conjugated spacer (), and dicyanovinyl as the acceptor (A). This effective push-pull structure gives rise to a bandgap of 1.5 eV and leads to the favorable energy level alignment with the C-60 acceptor that is suitable for solar flux absorption and charge transport in VD-OSCs. Notably, the insertion of the co-deposited BBTBDTM:C-60 layer between the BBTBDTM and C-60 layers improved the interfacial contact between BBTBDTM and C-60. As a result, the power conversion efficiency of the BBTBDTM:C-60-based VDOSCs reaches 1.49% (V-OC of 0.70 V, J(SC) of 4.56 mA cm(-2) and FF of 0.47) under AM 1.5 illumination.
- URI
- https://link.springer.com/article/10.1007/s13233-019-7132-2https://repository.hanyang.ac.kr/handle/20.500.11754/160710
- ISSN
- 1598-5032; 2092-7673
- DOI
- 10.1007/s13233-019-7132-2
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML