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10 September 2019 New molecular design towards high performance single junction organic solar cell (Conference Presentation)
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Abstract
Recently, non-fullerene n-type organic semiconductors (n-OS) have attracted significant attention as acceptors in organic photovoltaics (OPVs) due to their great potential to realize high power conversion efficiencies (PCEs). In this regard, a rational design of central fused ring unit of the n-OS molecules is crucial to maximize the state-of-the-art PCEs. Here, we report a new class of n-OS acceptor, Y series, that employ a ladder-type electron-deficient-core-based central fused ring to fine tune its absorption and energy levels. Among these new acceptors, the Y6-based OPVs exhibit a high efficiency of 15.7 % (both in conventional or inverted structures), and a certified efficiency of 14.9 % by an inverted structure. The electron-deficient-core-based fused ring reported in this work opens a new way in the molecular design of high performance n-OS acceptors for OPVs. References: [1] Nat. Commun., 2019, 10: 570 [2] Adv.Mater., 2019, 31: 1807577 [3] Joule, 2019, 4:1140-1151
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© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yingping Zou "New molecular design towards high performance single junction organic solar cell (Conference Presentation)", Proc. SPIE 11094, Organic, Hybrid, and Perovskite Photovoltaics XX, 110940W (10 September 2019); https://doi.org/10.1117/12.2542105
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