Dr. Evgeniy A. Mostovich
Assistant Professor
Novosibirsk State University
Novosibirsk, Russia
Small Oligomers for Organic Optoelectronics
Abstract
The development of organic semiconducting materials is crucial for various optoelectronic
applications: light-emitting transistors, organic lasers, printed displays and low-cost
identification tags (RFID). The charge carrier mobility higher than the value of ~1 cm 2 /Vs,
corresponding to that of amorphous silicon is desired. Additionally, solution processable and
chemically stable molecules are promising for low-cost, easily handled devices. Generally,
planar and rigid molecules with extended -conjugation (e.g., rubrene, pentacene, BTBT) are
suitable as organic semiconductors due to their high rigidity coupled with close crystal packing
those lead to low energy barrier for charge transfer and high intermolecular electronic coupling
resulting in efficient charge mobility. Despite their remarkable semiconducting properties the
solid-state luminescence for these materials is very low mainly due to aggregation effects.
R
R =
Si
R
Pentacene
TIPS-pentacene
Rubrene
S
R
R
S
S
S
BPTB
O
DNF
S
DNT
BTBT
O
O
BPFB
References:
1. C. Mitsui, T. Annaka, K. Nakamura, M. Mitani, D. Hashizume, K. Nakahara, M. Yamagishi, T. Ueno, Y.
Tanaka, M. Yano, et al., Polym. J. 2017, 49, 215.
2. M.S. Kazantsev, E.S. Frantseva, L.G. Kudriashova, V.G. Konstantinov, A.A. Mannanov, T.V. Rybalova,
E.V. Karpova, I.K. Shundrina, G.N. Kamaev, M.S. Pshenichnikov, E.A. Mostovich, D.Yu. Parashuk, RSC
Adv., 2016, 95, 92325.