Optical devices featuring textured semiconductor layers
Patent
·
OSTI ID:1063967
- Dover, MA
- Cary, NC
A semiconductor sensor, solar cell or emitter, or a precursor therefor, has a substrate and one or more textured semiconductor layers deposited onto the substrate. The textured layers enhance light extraction or absorption. Texturing in the region of multiple quantum wells greatly enhances internal quantum efficiency if the semiconductor is polar and the quantum wells are grown along the polar direction. Electroluminescence of LEDs of the invention is dichromatic, and results in variable color LEDs, including white LEDs, without the use of phosphor.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-04NT42275
- Assignee:
- The Trustees of Boston University (Boston, MA)
- Patent Number(s):
- 8,237,175
- Application Number:
- 13/242,700
- OSTI ID:
- 1063967
- Country of Publication:
- United States
- Language:
- English
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