Journal
ADVANCED MATERIALS
Volume 31, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201807159
Keywords
color rendering index; flexible solar cells; neutral color; semitransparent organic solar cells; ternary photoactive layers
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Funding
- National Natural Science Foundation of China [51673138, 51820105003, 91633301]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Jiangsu Provincial Natural Science Foundation [BK20160059]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [16KJB430027]
- China Postdoctoral Science Foundation [2017M610347]
- National Key Research and Development Program of China [2017YFA0207700]
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Neutral-colored semitransparent organic solar cells (ST-OSCs) have attracted considerable attention owing to their unique application in no-visual-obstacle building-integrated photovoltaics. Toward this promising potential application, a synergistic effect is first proposed by employing a dielectric mirror and ternary photoactive layer with near-infrared absorption to tune the color perception as well as ST-OSC performance precisely. As a result, a neutral-color ST-OSC with high average transmittance of over 21% is successfully constructed, and a remarkable color-rendering index approaching 100 and high power conversion efficiency (PCE) of 9.37% are simultaneously achieved. To the best of our knowledge, this is the highest PCE reported for neutral-color ST-OSCs to date. Importantly, this synergistic effect is demonstrated to be a universal strategy that is not only suitable for various photoactive layer systems, but can also be implanted in flexible substrate. The resulting neutral-color flexible ST-OSCs also show a promising PCE of 8.76%.
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