Photon-assisted oxygen diffusion and oxygen-related traps in organic semiconductors

Hikmet Najafov; Daniel Mastrogiovanni; Eric Garfunkel; Leonard C. Feldman; Vitaly Podzorov

doi:10.1002/adma.201004239

Photon-assisted oxygen diffusion and oxygen-related traps in organic semiconductors

Hikmet Najafov, Daniel Mastrogiovanni, Eric Garfunkel, Leonard C. Feldman, Vitaly Podzorov

Rutgers University

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

A highly sensitive trap characterization technique based on wavelength- and polarization-resolved photocurrent excitation spectroscopy of single crystalline organic semiconductors is described. The method reveals that even a brief illumination of organic molecular crystals in an oxygen atmosphere triggers a long-term oxygen diffusion in the dark that results in formation of traps at depth scales comparable to the light penetration length.

Original language	English
Pages (from-to)	981-985
Number of pages	5
Journal	Advanced Materials
Volume	23
Issue number	8
DOIs	https://doi.org/10.1002/adma.201004239
Publication status	Published - Feb 22 2011

Keywords

charge transport
organic field-effect transistors
organic semiconductors
oxygen diffusion
photoconductivity

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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