Recent advances of polymer acceptors for high-performance organic solar cells

Abstract

Recent advances in polymer acceptors that focus on structure–property relationships, which may provide guidance for photovoltaic materials, were systematically summarized.

An Effective Strategy to Design a Large Bandgap Conjugated Polymer by Tuning the Molecular Backbone Curvature

“…1 H NMR (600 MHz, CDCl 3 ) 8.00 (d, 2H), 7.52 (d, 2H). 13 (7): To a 500 mL roundbottomed flask was added 6 (0.56 g, 0.88 mmol), acetate (200 mL), and chloroform (200 mL). Then N-bromosuccinimide (0.35 g, 1.94 mmol) was added in batches, and the reaction mixture was stirred in dark at room temperature.…”

“…Bulk-heterojunction organic solar cells (OSCs) have attracted considerable attention due to their advantages of light weight, mechanical flexibility, and potential in the fabrication of large-area devices through roll-to-roll printing processes. [1][2][3][4] Over the past decades, significant progress in enhancing the power conversion efficiencies (PCEs) of OSCs has been achieved, due to the development of novel donors and acceptors, [5][6][7] the advances of interfacial materials, [8][9][10] the optimization of morphology, [11][12][13] and device engineering. [14][15][16] Among these efforts, the continuous development of low bandgap (LBG) non-fullerene acceptors (NFAs) is a crucial driving force for the remarkable advances in OSCs.…”

Facile synthesis of picenes incorporating imide moieties at both edges of the molecule and their application to n-channel field-effect transistors

“…For the realization of full-organic electronics, hole-transporting (p-channel) and electron-transporting (n-channel) materials are desired because such materials provide complementary metaloxide-semiconductor (CMOS) logic circuits 2,3 and organic/ polymer photovoltaics. [4][5][6] In the last two decades, a huge number of p-channel organic small-molecule FETs were studied from the aspects of both preparing suitable materials and device fabrication techniques. [7][8][9] Thus, organic molecules achieving a hole mobility exceeding 10 cm 2 V À1 cm À1 have been reported, e.g., [1]benzothieno [3,2-b] [1]benzothiophene (BTBT) 10 and related thiophene-fused polycyclic aromatics.…”

Theoretical Design of Dithienopicenocarbazole-Based Molecules by Molecular Engineering of Terminal Units Toward Promising Non-fullerene Acceptors

“…Currently, organic solar cells (OSCs), recognized for their great potential as sustainable energy sources, have been attracting extensive attention from researchers (Brabec et al, 2001;Gao et al, 2018;Upama et al, 2020;Zhao et al, 2020). OSCs have displayed unparalleled properties like practically inexhaustible resource storage, flexible modification, rapid power payback time, and being free of pollution during synthesis and operation (Lewis, 2007;Cheng et al, 2009;Lin et al, 2012).…”