中国物理B ›› 2015, Vol. 24 ›› Issue (9): 97201-097201.doi: 10.1088/1674-1056/24/9/097201
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
何泽尚, 于浩淼, 彭欢, 侯晓远
He Ze-Shang (何泽尚), Yu Hao-Miao (于浩淼), Peng Huan (彭欢), Hou Xiao-Yuan (侯晓远)
摘要: Devices with copper phthalocyanine (CuPc):molybdenum trioxide (MoO3) co-evaporated layer were fabricated and the current-voltage (I-V) and capacitance-voltage (C-V) characteristics were measured. It has been found that for a given voltage, the current of the device with a co-evaporated layer is higher than those without the co-evaporated layer and it reaches the highest value if the ratio of MoO3 to CuPc is 1:1. Meanwhile, the C-V characteristics showed that only free holes exist in the function layer consisting of pure CuPc. However, charge transfer (CT) complexes exist in the function layer of a CuPc:MoO3 mixture. The charge transfer complexes do not contribute to the transport of the device efficiently under low applied fields but are disassociated into free carriers rapidly at applied fields higher than 1.7× 105 V/cm, which greatly increases the conductivity.
中图分类号: (Charge carriers: generation, recombination, lifetime, and trapping)