CuSCN as selective contact in solution-processed small-molecule organic solar cells leads to over 7% efficient porphyrin-based device

Abstract

Two conjugated acceptor -π-donor -π-acceptor (A-π-D-π-

Low‐Bandgap Porphyrins for Highly Efficient Organic Solar Cells: Materials, Morphology, and Applications

“…[39] The same group then replaced the side chains attached the porphyrin with thiophenes to get 2a and 2b. [40] The devices processed with tetrahydrofuran (THF) based on 2a : PC71BM and 2b : PC71BM…”

Porphyrins and BODIPY as Building Blocks for Efficient Donor Materials in Bulk Heterojunction Solar Cells

“…The scaffold with central porphyrin and 3‐ethylrhodanine acceptor was studied several times by Fernando Langa's research team (Figure ). They used conjugated thiophene spacer with one unit to obtain Moran‐1 and two units for Moran‐2 . By using pyridine solvent additive during spin‐casting of the active layer and CuSCN, a quite unusual hole transport layer, instead of common PEDOT:PSS, PCEs of 6.59% and 7.24% were reached for Moran‐1 and Moran‐2, respectively.…”

High-yielding Pd2(dba)3·C6H6-based four-fold Sonogashira coupling with selenophene-conjugated magnesium tetraethynylporphyrin for organic solar cells

“…[7][8][9][10][11][12][13][14][15][16][17] Among the useful donor (D)-acceptor (A) materials, porphyrins with a structure of D-(p-A) 2 and D-(p-A) 4 conjugated with electron-decient groups at the meso-positions via ethynyl bridges exhibit outstanding performance. [18][19][20][21][22][23][24][25][26][27][28][29][30] Active layer materials with these types of porphyrins have some or all of the following advantages: a narrow band gap; a planar conguration contributing to balanced and high carrier mobility; broad absorption in the visible and near-infrared regions; and effective post-treatment processing. In 2013-2016, Peng and co-workers achieved impressive PCEs in excess of 7-9%, with prospects for further improvement, by the strategy of constructing a series of molecules based on a Zn-porphyrin core with two diketopyrrolopyrrole (DPP) units as end groups and employing a D-(p-A) 2 structure.…”