PbS/PbTiO3/Si heterostructures were prepared by successive depositions of a PbTiO3 thin film using the sol‐gel method and of a PbS thin film using the coprecipitation method on a bulk silicon wafer. The current–voltage characteristic of the heterostructure is of a diode type. The heterostructure is sensitive over a broad range of wavelengths, from 0.35 to 3 μm, when illuminated with continuous light or with modulated light. Three sensitivity peaks are observed, at 2.7, 0.95, and 0.38 μm. The measured signals are attributed to a photovoltaic effect which appears in the studied heterostructure.

Topics
Heterostructures, Current-voltage characteristic, Sol-gel process, Thin films, Co-precipitation, Photovoltaic effects
1.
S. Y.
Wu
,
Ferroelectrics
11
,
379
(
1976
).
Google Scholar
 
2.
K.
Sugibuchi
,
Y.
Kurogi
, and
N.
Endo
,
J. Appl. Phys.
40
,
2871
(
1975
).
Google Scholar
 
3.
D. W.
Chapman
and
R. R.
Metha
,
Ferroelectrics
3
,
101
(
1972
).
Google Scholar
 
4.
B. A.
Tuttle
,
D. C.
McIntyre
,
C. H.
Seager
,
T. J.
Garino
, and
W. L.
Warren
,
Mater. Res. Soc. Symp. Proc.
310
,
71
(
1993
).
Google Scholar
 
5.
Y.
Yasuoka
,
H.
Hirayama
, and
T.
Miyata
,
Jpn. J. Appl. Phys.
16
,
1195
(
1977
).
Google Scholar
 
6.
T.
Hagamoto
and
O.
Omoto
,
Jpn. J. Appl. Phys.
16
,
2279
(
1977
).
Google Scholar
 
7.
G. G.
Teather
and
L.
Young
,
Solid-State Electron.
11
,
527
(
1968
).
Google Scholar
 
8.
I.
Pintilie
,
E.
Pentia
,
L.
Pintilie
,
D.
Petre
,
C.
Constantin
, and
T.
Botila
,
J. Appl. Phys.
78
,
1713
(
1995
).
Google Scholar
 
9.
Y.
Xu
,
C. J.
Chen
,
R.
Xu
, and
J. D.
Meckenzie
,
J. Appl. Phys.
67
,
2985
(
1990
).
Google Scholar
 
10.
R. C.
Baumann
,
T. A.
Rost
, and
T. A.
Rabson
,
Mater. Res. Soc. Symp. Proc.
200
,
25
(
1990
).
Google Scholar
 
11.
M. D.
Carper
and
P. P.
Phule
,
Appl. Phys. Lett.
63
,
153
(
1993
).
Google Scholar
 
12.
J. C.
Chen
,
Y.
Xu
, and
J. D.
Meckenzie
,
Mater. Res. Soc. Symp. Proc.
243
,
551
(
1992
).
Google Scholar
 
13.
K. Budd, S. Dey, and D. A. Payne, Brit. Ceram. Proc. 36, 107 (1985).
14.
A. M. Glass and M. E. Lines, Principles and Applications of Ferroelectrics and Related Materials (Clarendon, Oxford, 1977).
15.
I. P.
Batra
,
P.
Wurfel
, and
B. D.
Silverman
,
Phys. Rev. B
8
,
3257
(
1973
).
Google Scholar
 
This content is only available via PDF.
© 1996 American Institute of Physics.
1996
American Institute of Physics
You do not currently have access to this content.