Organic metal-semiconductor field-effect phototransistors
Abstract
We have prepared phototransistors based on bromine-doped pentacene. Such devices reveal light detection over a wide energy range with amplification. The illumination modifies the charge characteristics of the Schottky gate of an enhancement-mode the metal-semiconductor field-effect transistor leading to transistor amplification of the photodiode-like response. A gain of 8 is obtained for illumination at 632 nm. These phototransistors combine the excellent properties of pentacene field-effect transistors and photovoltaic devices.
- Publication:
-
Applied Physics Letters
- Pub Date:
- May 2001
- DOI:
- 10.1063/1.1376666
- Bibcode:
- 2001ApPhL..78.3538S
- Keywords:
-
- 85.60.Dw;
- 85.30.Tv;
- 85.60.Gz;
- 73.61.Ph;
- 73.50.Pz;
- Photodiodes;
- phototransistors;
- photoresistors;
- Field effect devices;
- Photodetectors;
- Polymers;
- organic compounds;
- Photoconduction and photovoltaic effects