| Autor: |
Miyakawa, Kazunori, Ohkawa, Yuji, Matsubara, Tomoki, Kikuchi, Kenji, Kubota, Misao, Egami, Norifumi |
| Zdroj: |
Physica Status Solidi (C); Dec2012, Vol. 9 Issue 12, p2590-2593, 4p |
| Abstrakt: |
We have been developing high-gain avalanche rushing amorphous photoconductor (HARP) imaging devices to achieve ultra-high-sensitivity television cameras with high picture quality. The HARP photoconductive film, which multiplies signal electric charges through an avalanche multiplication phenomenon, is mainly made of amorphous selenium (a-Se) that has a band gap width of about 2.0 eV. The film has little sensitivity to light with wavelengths over 620 nm. To solve this problem drastically, we developed a new HARP film with a cadmium selenide (CdSe) layer to improve the quantum efficiency for red light. The new film had a quantum efficiency of over 80% across almost all of the visible light region and a multiplication factor of over 10. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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