Tripyridyltruxenes: Thermally Stable Cathode Buffer Materials for Organic Thin‐Film Solar Cells

Abstract

Pyridine performs: 3,8,13‐Tripyridyltruxenes are thermally stable cathode buffer materials in organic thin‐film solar cells. This class of truxene derivatives provides a high power‐conversion efficiency of up to 4.41 %. In contrast, the use of the analogous 3,8,13‐triphenyltruxene resulted in poor performance of the solar cells.

Supramolecular Coordination of Pb2+ Defects in Hybrid Lead Halide Perovskite Films Using Truxene Derivatives as Lewis Base Interlayers

“…[18,26,27] Synthesis of 10,15-Dihydro-5H-diindeno(1,2-a;1',2'-c)fluorene (1a) 1-Indanone (0.5 g, 10.6 mmol) was dissolved in acetic acid (10.0 mL), and then concentrated hydrochloric acid (5.0 mL) was added. The other reagents and solvents and used were purchased form Sigma-Aldrich© and TCl and used as received without further purification.…”

“…Our 1 H and 13 C{ 1 H} NMR data was in good agreement with those values previously reported. [18,26,27]…”

“…[9] Recently, in hybrid lead halide perovskite materials, many research groups have started to study the effect of molecules, as additives, to reduce the presence of surface defects . [12][13][14] Organic molecules with truxene structure (see Scheme 1, 1a) have been explored [15] in organic solar cells, [16][17][18] organic light emitting diodes, [19] and as a hole transport material in perovskite solar cells [20][21][22] due to their good optical and semiconductor properties. [12][13][14] Organic molecules with truxene structure (see Scheme 1, 1a) have been explored [15] in organic solar cells, [16][17][18] organic light emitting diodes, [19] and as a hole transport material in perovskite solar cells [20][21][22] due to their good optical and semiconductor properties.…”

“…[2,10,11] As an example, the recent work of Di Carlo's group shows that the use of graphene oxide leads to an increase in the solar to energy conversion efficiency due to the suppression of carrier recombination centres associated to surface defects. [12][13][14] Organic molecules with truxene structure (see Scheme 1, 1a) have been explored [15] in organic solar cells, [16][17][18] organic light emitting diodes, [19] and as a hole transport material in perovskite solar cells [20][21][22] due to their good optical and semiconductor properties. In addition, truxene molecules have good solubility in most common organic solvents, which improves film morphology.…”

Excited State N−H Tautomer Selectivity in the Singlet Energy Transfer of a Zinc(II)‐Porphyrin–Truxene–Corrole Assembly

“…Truxene is an aromatic species with C 3 geometry that has many applications [1] including in solar technology [2][3][4][5][6][7][8][9][10][11] and organic light emitting diodes (OLEDs). [12][13][14][15][16][17][18] Recently,t ruxeneh as also been investigated as ab ridging unit between energy donors and acceptors both by our group and others.…”