... We assume that it could come from the conformational change of the dopant material in the excited state ... Prior to the deposition of organic materials, indium-tin-oxide (ITO)/glass was cleaned with a routine ... 1H, J = 7.8 Hz), 7.53–7.51 (d, 1H, J = 7.8 Hz), 7.41–7.37(t, 1H, J = 7.8 Hz ...