We report the results of electrochemical etching on ZnTe crystals using the acidic etchant Under optimized conditions we are able to etch several micrometer deep patterns into 〈111〉 and 〈110〉 surfaces. A comparison between etched and polished crystals shows that a surface enlargement of approximately 50 times can be obtained. The etched surfaces have strongly reduced optical reflectance, high photoluminescence efficiency, and excellent photosensitivity. Needlelike structures can be prepared, which exhibit a blueshift of the excitonic transition energies, indicating that parts of the etch pattern are in the quantum confinement regime.
REFERENCES
1.
R.
Könenkamp
, P.
Hoyer
, and A.
Wahi
, J. Appl. Phys.
79
, 7029
(1996
).2.
S. Siebentritt, K. Ernst, C.-H. Fischer, R. Könenkamp, and M. C. Lux-Steiner, in Proceedings of the 14th European PV Solar Energy Conference (Barcelona, 1997), p. 1823.
3.
R.
Triboulet
, K.
Phan Van
, and G.
Didier
, J. Cryst. Growth
101
, 216
(1990
).4.
J. O. Ndap, Doctoral thesis, Université Paris XI Orsay, 1996.
5.
S. I. Zhdanov, in Standard Potentials in Aqueous Solution (edited by A. J. Bard, R. Parsons, and J. Jordan) (Marcel Dekker, New York, 1985), IVPAC, p. 115.
6.
S.
Jayasekera
, I. M.
Ritchie
, and J.
Avraamides
, Aust. J. Chem.
47
, 1953
(1994
).7.
C.
Youtsey
, L. T.
Romano
, and I.
Adesia
, Appl. Phys. Lett.
73
, 797
(1998
).8.
P. J.
Dean
, H.
Venghaus
, J. C.
Pfister
, B.
Shaub
, and J.
Marine
, J. Lumin.
16
, 363
(1979
).9.
W. S.
Kuhn
, A.
Lusson
, B. Qu
Hen
, C.
Grattepain
, H.
Dumont
, O.
Gorochov
, S.
Bauer
, K.
Wolf
, M.
Worz
, T.
Reisinger
, A.
Rosenauer
, H. P.
Wagner
, H.
Stanzl
, and W.
Gebhardt
, Prog. Cryst. Growth Charact. Mater.
31
, 119
(1995
).10.
11.
C. Weisbuch and B. Vinter, in Quantum Semiconductor Structures (Academic, San Diego, 1991).
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1999
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