Small molecule donors based on benzodithiophene and diketopyrrolopyrrole compatible with both fullerene and non-fullerene acceptors

Abstract

Two small molecule donors achieved over 5% PCEs when combined with fullerene, non-fullerene or blended acceptors.

Theoretical exploration of diverse electron-deficient core and terminal groups in A–DA′D–A type non-fullerene acceptors for organic solar cells

“…The lone pair electrons of the imine nitrogen atoms of BTD and BTZ participate in the hybridization to form three sp 2 hybrid orbitals, which leads to the enrichment of electrons in the region near the imine nitrogen atom, thus resulting in a minimum ESP. The sp 3 -N lone pair electrons of the nitrogen atoms in pyrrole participate in the p-conjugation of the carbon skeleton and lose a significant magnitude of the lone pair character, leading to the maximum ESP. 63 As listed in Table 1, the quantitative information of surface ESP distributions on Y6, Y10 and Y11 is extracted.…”

“…With the depleting fossil resources and continuous environmental pollution, clean and renewable energy has attracted considerable attention around the world. [1][2][3][4][5][6] Solar energy is one of the most reliable resources that could meet the gigantic and sustainable demands for energy around the world. 7,8 Solar cells have exhibited tremendous potential in effectively utilizing solar energy.…”

Nonfullerene All‐Small‐Molecule Organic Solar Cells: Prospect and Limitation

“…The inverted device achieved better device performance, which was one of the few cases in NF‐ASM OSCs, to our knowledge. Furthermore, Huo et al [ 70 ] further increased the number of thiophenes and extended the length of side chains to construct BDTTT‐DPP and BDTTVT‐DPP molecules with medium bandgaps to study the effect of different conjugated groups on device performance. Due to the extension of conjugated chains, the BDTTVT‐DPP:IDIC film had a larger absorption strength in the range of 200–800 nm, and obtained a slightly increased J sc .…”

Synthesis of the diketopyrrolopyrrole/terpyridine substituted carbazole derivative based polythiophenes for photovoltaic cells

“…Because of their light weight, low cost, and exibility, p-conjugated polythiophenes (PTs) are promising candidates for various optoelectronic device applications, including polymer light-emitting devices, 1,2 electrochromic devices, 3 organic eldeffect transistors, 4,5 photovoltaic (PV) cells, [6][7][8][9][10][11][12][13][14][15] and uorescent chemosensors. [16][17][18][19] Polymer-based photovoltaic cells (PVCs) typically contain a layer comprising a blend of PT and a fullerene derivative.…”