Journal
PROGRESS IN PHOTOVOLTAICS
Volume 26, Issue 3, Pages 188-195Publisher
WILEY
DOI: 10.1002/pip.2965
Keywords
building-integrated photovoltaics; organic solar cell; oxide-metal-oxide; semi-transparent
Funding
- SBS foundation
- National Research Foundation of Korea [20090093818, 2014R1A4A1071686, 2017R1A2B4003583]
- Korea Institute of Materials Science (KIMS)
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Semi-transparent plastic solar cells are currently highly attractive for their potential as the most prominent components for building-integrated photovoltaics. However, the power conversion efficiency (PCE) of semi-transparent plastic solar cells still lags behind due to the lack of a suitable transparent top electrode which can be easily fabricated. Here, we demonstrate high performance semi-transparent plastic solar cells by introducing an oxide-metal-oxide (OMO) multilayer composed of MoO3 and Ag as a transparent top electrode. Because the conductivity of the OMO electrode is governed by an intermediate Ag layer sandwiched between 2 MoO3 layers, the PCE also strongly depends on the thickness of the intermediate Ag layer in the OMO electrode. By controlling the thickness of Ag layer, we obtained various PCE values from 4.5% with similar to 50% maximum transparency in the visible region to 9.1% with similar to 5% maximum transparency in the visible region. In addition, in order to get closer to practical application, 2 sizes of mini-module devices were fabricated on a larger (10.0 cm x 10.0 cm) substrate for outdoor operation and small-sized (7.0 cm x 5.0 cm) substrates for indoor operation were demonstrated using 3 materials of different color.
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