Referenced Items are not available for this document.
A glass/ITO/a-Si:H/Cr photodiode with a voltage selectable spectral response was fabricated. The diode consists of two back-to-back Schottky junctions. As the bias at the Cr side changes from 1.5 to -1.5 V, three color peak responses can be found, i.e., 480 nm (blue) at V=0.5 V, 530 nm (green) at 1.5 V, and 620 nm (red) at -1.5 V. The basic idea consists of using the different bias voltages to change the location and depth of the photon collection region in which photons with different wavelengths are mainly collected. The photoresponse time was measured under a red LED light injection with an intensity of 150 mu W. The typical photoresponse time for red is 60 ns under -1.5-V bias. These basic studies show that the vertical-type Cr/a-Si:H/ITO back-to-back Schottky diode is a good candidate for a high-speed colour image sensor.<
Published in:
Electron Device Letters, IEEE
(Volume:12
,
Issue:
4
)
Date of Publication: April 1991
- Page(s):
- 172 - 174
- ISSN :
- 0741-3106
- INSPEC Accession Number:
- 3911907
- Digital Object Identifier :
- 10.1109/55.75754
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- April 1991
- Sponsored by :
- IEEE Electron Devices Society
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