Highly Efficient Semitransparent Organic Solar Cells with Color Rendering Index Approaching 100

Jingwen Zhang; Guiying Xu; Feng Tao; Guang Zeng; Moyao Zhang; Yang Michael Yang; Yaowen Li; Yongfang Li

doi:10.1002/adma.201807159

Highly Efficient Semitransparent Organic Solar Cells with Color Rendering Index Approaching 100

Adv Mater. 2019 Mar;31(10):e1807159. doi: 10.1002/adma.201807159. Epub 2019 Jan 21.

Authors

Jingwen Zhang¹, Guiying Xu¹, Feng Tao², Guang Zeng^{1

3}, Moyao Zhang¹, Yang Michael Yang², Yaowen Li¹, Yongfang Li^{1

4}

Affiliations

¹ Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
² State Key Laboratory of Modern Optical Instrumentation College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
³ College of Materials Science and Engineering, Nanchang Hangkong University, 696 Fenghe Avenue, Nanchang, 330063, China.
⁴ Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.

PMID: 30663145
DOI: 10.1002/adma.201807159

Abstract

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%.

Keywords: color rendering index; flexible solar cells; neutral color; semitransparent organic solar cells; ternary photoactive layers.

Abstract

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