Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-29T06:31:23.132Z Has data issue: false hasContentIssue false
  • English
  • Français

Electrical Properties of ITO/CdSe/P3OT/Metal Heterojunction

Published online by Cambridge University Press:  01 February 2011

Oscar H. Salinas ,
Hailin Hu ,
Ma.Elena Nicho-Díaz ,
Cecilia López-Mata  and
Oscar Gomez-Daza
Oscar H. Salinas
Affiliation:
Centro de Investigación en Energía, UNAM, Av.Xochicalco S/N, Temixco, Morelos, 62580, México
Hailin Hu
Affiliation:
Centro de Investigación en Energía, UNAM, Av.Xochicalco S/N, Temixco, Morelos, 62580, México
Ma.Elena Nicho-Díaz
Affiliation:
CIICAp-Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos.
Cecilia López-Mata
Affiliation:
Centro de Investigación en Energía, UNAM, Av.Xochicalco S/N, Temixco, Morelos, 62580, México Instituto Tecnológico de Zacatepec, Zacatepec, Morelos.
Oscar Gomez-Daza
Affiliation:
Centro de Investigación en Energía, UNAM, Av.Xochicalco S/N, Temixco, Morelos, 62580, México
Get access

Abstract

Conducting polymer based heterojunctions have been intensively studied because of prominent application in photovoltaic solar cells. It is reported in this work the formation, environmental conditions, of hybrid heterojunctions of cadmium selenide (CdSe) poly 30 ctylthiophene (P3OT) by casting a chemically synthesized P3OT solution onto chemical bath deposited (CBD) or screen-printed (SP) CdSe coatings. By using ITO as contact and gold (Au), silver (Ag) or copper (Cu) as metal contact, the electrical properties CdSe–P3OT heterojunctions were studied at room temperature under environmental conditions. In the case of Au contact, the curves of current density (J) vs. applied potential (V) of both (SP) and CdSe (CBD) coatings indicate that the contacts are quasi ohmic. However, with same metal contact the electrical behavior of CdSe (SP)-doped P3OT heterojunction rectifying and the rectification ratio increases as the weight percentage of P3OT increases in heterojunction structure. Furthermore, a small photovoltage (39 mV) was observed in the hybrid structure for Cu contact. On the other hand, for a CdSe (CBD)-pristine heterojunction Au contact gives an ohmic behavior, but rectifying J-V curves are found with contact.

Keywords

Hybrid heterojunctionsCdSeP3OTphotovoltaic effectmetal-semiconductor contact.
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 871: Symposium I – Organic Thin-Film Electronics , 2005 , I9.30
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1] Sze, S.M., Physics of semiconductor devices 2nd. edition, John Wiley and Sons. New York, 1981.Google Scholar
[2] Tang, C.W., Appl. Phys. Lett. 48 (1986) 183.Google Scholar
[3] Cong, H. Nguyen, Dieng, M., Sene, C., Chartier, P.. Solar Energy Materials & Solar Cells 63 (2000) 23.Google Scholar
[4] Nicho, M.E., Hu, Hailin, lópez-Mata, C. and Escalante, J.. Solar Energy Materials & Solar Cells 82 (2004) 105–118.Google Scholar
[5] Nair, P.K., Nair, M.T.S., García, V.M.. Arenas, O.L., Peña, Y., Castillo, A., Ayala, I.T., Gómez-daza, O., Sánchez, A., Campos, J., Hu, H., Suárez, R., Rincón, M.E., Solar Energy Materials & Solar Cells. 52 (1998) 313.Google Scholar
[6] Gómez-Daza, O., García, V.M., Nair, M.T.S., Nair, P.K., Appl. Phys. Lett. 68 (1996) 1987.Google Scholar
[7] López-Mata, C., Nicho, M.E., Hu, Hailin, Sánchez, L., Cadenas-Pliego, G. and Hernández, E. García-, submitted.Google Scholar
[8] Micaroni, L., Nart, F.C. and Hümmelgen, I.A., J. Solid State Electrochem. 7 (2002) 55.Google Scholar
[9] Vardhanan, Rajasekharan Vishnu, Zhou, Liang and Gao, Zhiqiang, Thin Solid Films 350 (199) 283.Google Scholar
[10] Salinas, Oscar H., López-Mata, C., Hu, Hailin, Nicho, M.E., Sánchez, Aarón, Solar Energy Materials & Solar Cells, to be Published.Google Scholar
[11] Manoj, A.G. and Narayan, K.S., Optical Materials 21 (2002) 417.Google Scholar
[12] Greenham, N.C., Peng, Xiaogang, Alivisatos, A.P., Physical Review B, 54 (1996) 17628.Google Scholar
[13] Alivisatos, A.P., Science 217 (1996) 933.Google Scholar
[14] Murali, K.R., Swaminathan, V., Trivedi, D.C., Solar Energy Materials & Solar Cells, 81 (2004) 113.Google Scholar