期刊
APPLIED PHYSICS LETTERS
卷 76, 期 9, 页码 1194-1196出版社
AMER INST PHYSICS
DOI: 10.1063/1.125980
关键词
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A high-speed photocurrent multiplication device that has an organic double-layered structure was fabricated. In this device, the improvement in the uniformity of the organic films, caused by inserting an additional amorphous-like organic underlayer, enabled high-electric-field operation of the device. Owing to efficient carrier photogeneration under the application of higher voltages, the response time of the multiplied photocurrent became shorter without a decrease in the multiplication rate, and showed clear saturation above 18 V. At a high applied voltage of 20 V, a large multiplication rate of 1.7 x 10(5)-fold, with a high-speed response of 3.7 s, was achieved. A rise time of only 26 ms required for the 1000-fold multiplication suggests that the multiplication device could potentially be applied to a practical imaging device. (C) 2000 American Institute of Physics. [S0003-6951(00)00909-8].
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