Enhanced Light Utilization in Semitransparent Organic Photovoltaics Using an Optical Outcoupling Architecture
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- 16 August 2019
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 31 (40), e1903173
- https://doi.org/10.1002/adma.201903173
Abstract
Building‐integrated photovoltaics employing transparent photovoltaic cells on window panes provide an opportunity to convert solar energy to electricity rather than generating waste heat. Semitransparent organic photovoltaic cells (ST‐OPVs) that utilize a nonfullerene acceptor‐based near‐infrared (NIR) absorbing ternary cell combined with a thin, semitransparent, high conductivity Cu‐Ag alloy electrode are demonstrated. A combination of optical outcoupling and antireflection coatings leads to enhanced visible transmission, while reflecting the NIR back into the cell where it is absorbed. This combination of coatings results in doubling of the light utilization efficiency (LUE), which is equal to the product of the power conversion efficiency (PCE) and the average photopic transparency, compared with a conventional semitransparent cell lacking these coatings. A maximum LUE = 3.56 ± 0.11% is achieved for an ST‐OPV with a PCE = 8.0 ± 0.2% at 1 sun, reference AM1.5G spectrum. Moreover, neutral colored ST‐OPVs are also demonstrated, with LUE = 2.56 ± 0.2%, along with Commission Internationale d'Eclairage chromaticity coordinates of CIE = (0.337, 0.349) and a color rendering index of CRI = 87.Keywords
Funding Information
- U.S. Department of Energy (DE‐EE0008561)
- Office of Naval Research (N00014‐17‐1‐2211)
- Universal Display Corporation
- University of Michigan
This publication has 37 references indexed in Scilit:
- Heat-Insulating Multifunctional Semitransparent Polymer Solar CellsJoule, 2018
- Recent advances in semi-transparent polymer and perovskite solar cells for power generating window applicationsEnergy & Environmental Science, 2018
- Emergence of highly transparent photovoltaics for distributed applicationsNature Energy, 2017
- Semi-transparent solar cellsJournal of Physics D: Applied Physics, 2017
- Transparent polymer solar cells employing a layered light-trapping architectureNature Photonics, 2013
- Theoretical limits for visibly transparent photovoltaicsApplied Physics Letters, 2012
- Visibly Transparent Polymer Solar Cells Produced by Solution ProcessingACS Nano, 2012
- Transparent, near-infrared organic photovoltaic solar cells for window and energy-scavenging applicationsApplied Physics Letters, 2011
- Fabrication, Optical Modeling, and Color Characterization of Semitransparent Bulk‐Heterojunction Organic Solar Cells in an Inverted StructureAdvanced Functional Materials, 2010
- Semitransparent organic photovoltaic cellsApplied Physics Letters, 2006