Enhanced electronic properties of GaAs surfaces chemically passivated by selenium reactions
-
- C. J. Sandroff
- Bellcore, 331 Newman Springs Road, Red Bank, New Jersey 07701
-
- M. S. Hegde
- Bellcore, 331 Newman Springs Road, Red Bank, New Jersey 07701
-
- L. A. Farrow
- Bellcore, 331 Newman Springs Road, Red Bank, New Jersey 07701
-
- R. Bhat
- Bellcore, 331 Newman Springs Road, Red Bank, New Jersey 07701
-
- J. P. Harbison
- Bellcore, 331 Newman Springs Road, Red Bank, New Jersey 07701
-
- C. C. Chang
- Bellcore, 331 Newman Springs Road, Red Bank, New Jersey 07701
この論文をさがす
抄録
<jats:p>We describe chemical modifications of GaAs surfaces which produce robust selenium layers that significantly enhance the electronic properties of the surface. The terminating layers are produced by depositing elemental selenium on GaAs surfaces under alkaline conditions followed by conversion to selenide and selenate using sodium sulfide. These selenium phases are more stable against photo-oxidation than their sulfide counterparts. On the chemically modified surface, photoluminescence is enhanced 400× and Raman spectroscopy indicates that surface band bending has been reduced to ∼0.1 eV. X-ray photoelectron spectroscopy reveals significant AsSe bond formation at the surface and a complicated interfacial structure with selenium present in oxidation states varying from 2− to 4+.</jats:p>
収録刊行物
-
- Journal of Applied Physics
-
Journal of Applied Physics 67 (1), 586-588, 1990-01-01
AIP Publishing
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1360016869447662336
-
- NII論文ID
- 30015834843
-
- NII書誌ID
- AA00693547
-
- DOI
- 10.1063/1.345201
-
- ISSN
- 10897550
- 00218979
-
- データソース種別
-
- Crossref
- CiNii Articles