Photodetection by barrier modulation in Cu-diffused Au/CdS junctions

H. K. Bücher, B. C. Burkey, G. Lubberts, E. L. Wolf

Research output: Contribution to journalArticlepeer-review


Modulation of essentially thermionic forward current by light-induced lowering of an electrostatic barrier leads to steady-state electron per photon gain of order 106 in narrow Cu-compensated Au/CdS junctions. The light dependence of the barrier, whose peak lies within the semiconductor, is measured directly by internal photoemission. A model of the junction is presented and the limiting threshold and gain of this type of device is estimated.

Original languageEnglish (US)
Pages (from-to)617-619
Number of pages3
JournalApplied Physics Letters
Issue number11
StatePublished - 1973

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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