Back illuminated photodiodes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 17, 2005
Grant Date -
Sep 25, 2003
app pub date -
Feb 10, 2003
filing date -
Feb 11, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A highly reflecting back illuminated diode structure allows light that has not been absorbed by a semiconductor absorbing region to be back reflected for at least a second pass into the absorbing region. The diode structure in a preferred embodiment provides a highly reflecting layer of gold to be supported in part by a conducting alloyed electrode ring contact and in part by a passivation layer of SixNy. Conveniently this structure provides a window within the contact which allows light to pass between the absorbing region and the reflecting layer of gold.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 12 Citation Count
- H01L Class
- 42.39 % this patent is cited more than
- 20 Age
