Temperature dependent charge transport in organic field-effect transistors with the variation of both carrier concentration and electric field

Abbas, Mamatimin; Pivrikas, Almantas; Arici, Elif; TEKİN, NALAN; Ullah, Mujeeb; Sitter, Helmut; Sariciftci, Niyazi

doi:10.1088/0022-3727/46/49/495105

Temperature dependent charge transport in organic field-effect transistors with the variation of both carrier concentration and electric field

Atıf İçin Kopyala

Abbas M., Pivrikas A., Arici E., TEKİN N., Ullah M., Sitter H., ...Daha Fazla

JOURNAL OF PHYSICS D-APPLIED PHYSICS, cilt.46, sa.49, 2013 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 46 Sayı: 49
Basım Tarihi: 2013
Doi Numarası: 10.1088/0022-3727/46/49/495105
Dergi Adı: JOURNAL OF PHYSICS D-APPLIED PHYSICS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Kocaeli Üniversitesi Adresli: Evet

Özet

We present experimental evidence of combined effects of temperature, carrier concentration, electric field as well as disorder on charge transport in an organic field-effect transistor (OFET). Transfer characteristics of an OFET based on sexithiophene active layer were measured from 80 to 300 K. Thermally activated carrier mobility followed Arrhenius law with two activation energies. Carrier density variation led to finite extrapolated Meyer-Neldel (MN) temperature (780 K) at low fields. Negative electric field-dependent mobility was observed in available field range. MN temperature shifted towards higher temperature when the electric field increased, and did not retain its finite character above the field of 4 x 10(3) Vcm(-1).