Improved Performance of All‐Polymer Solar Cells Enabled by Naphthodiperylenetetraimide‐Based Polymer Acceptor
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- 3 May 2017
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 29 (26)
- https://doi.org/10.1002/adma.201700309
Abstract
A new polymer acceptor, naphthodiperylenetetraimide-vinylene (NDP-V), featuring a backbone of altenating naphthodiperylenetetraimide and vinylene units is designed and applied in all-polymer solar cells (all-PSCs). With this polymer acceptor, a new record power-conversion efficiencies (PCE) of 8.59% has been achieved for all-PSCs. The design principle of NDP-V is to reduce the conformational disorder in the backbone of a previously developed high-performance acceptor, PDI-V, a perylenediimide-vinylene polymer. The chemical modifications result in favorable changes to the molecular packing behaviors of the acceptor and improved morphology of the donor–acceptor (PTB7-Th:NDP-V) blend, which is evidenced by the enhanced hole and electron transport abilities of the active layer. Moreover, the stronger absorption of NDP-V in the shorter-wavelength range offers a better complement to the donor. All these factors contribute to a short-circuit current density (J sc) of 17.07 mA cm−2. With a fill factor (FF) of 0.67, an average PCE of 8.48% is obtained, representing the highest value thus far reported for all-PSCs.Keywords
Funding Information
- National Natural Science Foundation of China (21674001, 51473003, 21374090)
- Research Grants Council, University Grants Committee (T23‐407/13 N, N_HKUST623/13, 16305915, 16322416, 606012)
- Innovation and Technology Commission (ITC‐CNERC14SC01, ITS/083/15)
- U.S. Department of Energy (DE‐AC02‐05CH11231)
This publication has 39 references indexed in Scilit:
- Energy‐Level Modulation of Small‐Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar CellsAdvanced Materials, 2016
- Efficient organic solar cells processed from hydrocarbon solventsNature Energy, 2016
- Highly Efficient Organic Solar Cells with Improved Vertical Donor–Acceptor Compositional Gradient Via an Inverted Off‐Center Spinning MethodAdvanced Materials, 2015
- Realizing over 10% efficiency in polymer solar cell by device optimizationScience in China Series B Chemistry, 2015
- Aggregation and morphology control enables multiple cases of high-efficiency polymer solar cellsNature Communications, 2014
- Single Junction Inverted Polymer Solar Cell Reaching Power Conversion Efficiency 10.31% by Employing Dual-Doped Zinc Oxide Nano-Film as Cathode InterlayerScientific Reports, 2014
- A polymer tandem solar cell with 10.6% power conversion efficiencyNature Communications, 2013
- A high mobility conjugated polymer based on dithienothiophene and diketopyrrolopyrrole for organic photovoltaicsEnergy & Environmental Science, 2012
- Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor HeterojunctionsScience, 1995
- Efficient photodiodes from interpenetrating polymer networksNature, 1995