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Photoemission Studies on N‐Substituted Dithienylated Phenothiazines
Author(s) -
Fingerle Mathias,
Hemgesberg Maximilian,
Schmitt Yvonne,
Lach Stefan,
Gerhards Markus,
Thiel Werner R.,
Ziegler Christiane
Publication year - 2015
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201500095
Subject(s) - chromophore , x ray photoelectron spectroscopy , oled , photochemistry , absorption spectroscopy , materials science , spectroscopy , fluorescence , absorption (acoustics) , crystallite , metal , chemistry , optoelectronics , nanotechnology , crystallography , chemical engineering , optics , physics , layer (electronics) , quantum mechanics , engineering , metallurgy , composite material
Abstract Dithienylated phenothiazines (DTPTs) with different functional groups attached to the central nitrogen atom are presented as a class of versatile metal‐free chromophores for the design of dye‐sensitized solar cells (DSSCs) and organic light‐emitting diodes (OLEDs). The electronic characteristics of spin‐coated thin films on polycrystalline gold were studied using photoelectron spectroscopy assisted by theoretical calculations, scanning force microscopy, and UV/Vis spectroscopy. Complementary fluorescence spectra show light emission in the blue region (465 nm). The absorption properties and good hole‐transporting abilities make DTPTs feasible hole‐transporting materials (HTM) and metal‐free chromophores in UV‐sensitive solar cell designs.