Nam, Minwoo Noh, Hye Yeon Kang, Joo-Han Cho, Junhee Min, Byoung Koun Shim, Jae Won Ko, Doo-Hyun 2024-01-19T20:31:20Z 2024-01-19T20:31:20Z 2021-09-02 2019-04 2211-2855 https://pubs.kist.re.kr/handle/201004/120174 In spite of enormous promise in a multitude of applications, semi-transparent organic photovoltaics (ST OPVs) relatively lag behind opaque OPVs in the efficiency, and further efforts are imperative to improve their performance while preserving their transparency and tunable color perceptivity. Here, we develop highly efficient ST OPVs based on quaternary blends (Q-blend) involving non-fullerene small molecules, and demonstrate their realistic application in four-terminal (4T) tandem PVs. The ST quaternary OPV (Q-OPV) exhibits superior power conversion efficiencies (PCEs) higher than those of the state-of-the-art ST OPVs under any irradiation conditions, while retaining high transparency and the possibility of implementing various colors. In particular, we achieve the first PCE value exceeding 15% (similar to 15.46%) under indoor lighting among the ST OPVs reported to date. The 4T tandem configurations based on a ST Q-OPV with diverse opaque PVs demonstrate broadband photon harvesting, with aesthetic functions rendered from the color-codable ST Q-OPV. The benefits of the Q-blend platform, including efficient operation under any irradiation circumstance (both indoor and outdoor lighting) and device color codability via tuning the quaternary components, can further expand the applicability of the ST Q-OPV to various practical applications. English ELSEVIER POLYMER SOLAR-CELLS TANDEM POLYMER PERFORMANCE GENERATION GAP Semi-transparent quaternary organic blends for advanced photovoltaic applications Article 10.1016/j.nanoen.2019.01.090 1 NANO ENERGY, v.58, pp.652 - 659 NANO ENERGY 58 652 659 scie scopus 000461433600073 2-s2.0-85061078303 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article POLYMER SOLAR-CELLS TANDEM POLYMER PERFORMANCE GENERATION GAP Semi-transparent organic photovoltaics Quaternary blend Four-terminal tandem photovoltaics Indoor lighting