화학공학소재연구정보센터
Applied Surface Science, Vol.252, No.11, 4023-4025, 2006
Possible transition from space-charge-limited to injection-limited conduction in poly (3-hexylthiophene) thin films
Two-terminal thin films of poly(3-hexylthiophene) (P3HT) with a wide electrode separation (150 mu m) has been studied using current-voltage characteristics at different temperatures. Space-charge-limited conduction (SCLC) with high injection barriers (1.3 eV) has been observed at all temperatures in the low electric field regime. A possible transition from SCLC to injection-limited conduction (ILC) is reported. The experimental results have been compared with the disorder-controlled injection model proposed by Arkhipov et al.