Ternary Organic Solar Cells Based on a Wide-Bandgap Polymer with Enhanced Power Conversion Efficiencies
Authors:
Open Access
- 19 August 2019
- journal article
- research article
- Published by Springer Nature in Scientific Reports
- Vol. 9 (1) , 1-9
Abstract
A low-bandgap acceptor (ITIC) was added to a binary system composed of a wide-bandgap polymer (PBT-OTT) and an acceptor (PC71BM) to increase the light harvesting efficiency of the associated organic solar cells (OSCs). A ternary blend OSC with an acceptor ratio of PC71BM:ITIC = 8:2 was found to exhibit a power conversion efficiency of 8.18%, which is 18% higher than that of the binary OSC without ITIC. This improvement is mainly due to the enhanced light absorption and optimized film morphology that result from ITIC addition. Furthermore, an energy level cascade forms in the blend that ensures efficient charge transfer, and bimolecular and trap-assisted recombination is suppressed. Thus the use of ternary blend systems provides an effective strategy for the development of efficient single-junction OSCs.Keywords
This publication has 36 references indexed in Scilit:
- Fluorine-functionalization of an isoindoline-1,3-dione-based conjugated polymer for organic solar cellsOrganic Electronics, 2018
- Thick Film Polymer Solar Cells Based on Naphtho[1,2‐c:5,6‐c]bis[1,2,5]thiadiazole Conjugated Polymers with Efficiency over 11%Advanced Energy Materials, 2017
- Highly crystalline low-bandgap polymer nanowires towards high-performance thick-film organic solar cells exceeding 10% power conversion efficiencyEnergy & Environmental Science, 2016
- Efficient organic solar cells processed from hydrocarbon solventsNature Energy, 2016
- Efficient inverted polymer solar cells employing favourable molecular orientationNature Photonics, 2015
- Polymer Solar Cells with Efficiency >10% Enabled via a Facile Solution‐Processed Al‐Doped ZnO Electron Transporting LayerAdvanced Energy Materials, 2015
- 25th Anniversary Article: Rise to Power – OPV‐Based Solar ParksAdvanced Materials, 2013
- The case for organic photovoltaicsRSC Advances, 2013
- Organic Ternary Solar Cells: A ReviewAdvanced Materials, 2013
- Organic photovoltaicsEnergy & Environmental Science, 2009