Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-26T15:37:24.635Z Has data issue: false hasContentIssue false
  • English
  • Français

Optical and electrical properties of nanostructured heterojunction (Au|PdPc|ClAlPc|Al) and using as O2 sensor

Published online by Cambridge University Press:  18 August 2011

M.E. Azim-Araghi ,
E. Karimi-Kerdabadi  and
M.J. Jafari
M.E. Azim-Araghi
Affiliation:
Applied Physics Division, Physics Department, Tarbiat Moallem University, 49 Mofateh Avenue, Tehran, Islamic Republic of Iran
E. Karimi-Kerdabadi*
Affiliation:
Applied Physics Division, Physics Department, Tarbiat Moallem University, 49 Mofateh Avenue, Tehran, Islamic Republic of Iran
M.J. Jafari
Affiliation:
Applied Physics Division, Physics Department, Tarbiat Moallem University, 49 Mofateh Avenue, Tehran, Islamic Republic of Iran
*
aemail: [email protected]
Get access

Abstract

Nanostructure thin films and sandwich devices of palladium phthalocyanine (PdPc) and chloro-aluminum-phthalocyanine (ClAlPc) were prepared by thermal evaporation technique. Optical and struc- tural properties of nanostructure thin films were investigated by XRD, SEM and optical absorption. The SEM images demonstrated PdPc (40–60 nm) and ClAlPc (30–50 nm) nanostructures. XRD pat- terns showed that thin films are in α-phase at room temperature. Also, optical bandgap energy of thin films was calculated by optical absorption spectra. Heterojunction (Au|PdPc|ClAlPc|Al) and single layer (Au|PdPc|Al and Au|ClAlPc|Al) devices were fabricated. Electrical measurements demonstrated the semi-conducting and photo-conducting behavior of thin films. After that, devices were exposed to different concentrations of O2 at 300 K and 350 K and conductivity of thin films was increased on exposure to O2 . Heterojunction devices were more sensitive than other thin films and had better response and reversibility in comparison with single layer devices at 350 K. Finally, 10% O2 was mixed with different percentages of relative humidity and all results showed that the conductivity of thin films is reduced on exposure to O2 mixed to humidity.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 55 , Issue 3 , September 2011 , 30203
Copyright
© EDP Sciences, 2011

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

Chen, P.C., Shen, G., Zhou, C., IEEE Trans. Nanotech. 7, 668 (2008)CrossRef
Azim-Araghi, M.E., Krier, A., Pure Appl. Opt. 6, 443 (1997)10.1088/0963-9659/6/4/007CrossRef
Dan, Y., Cao, Y., Mallouk, T.E., Evoy, S., A.T. Charlie Johnson, Nanotechnology 20, 434014 (2009)CrossRef
An, K.H., Jeong, S.Y., Hwang, H.R., Lee, Y.H., Adv. Mater. 16, 1005 (2004)CrossRef
Azimaraghi, M.E., Campbell, D., Eur. Phys. J. Appl. Phys. 43, 37 (2008)CrossRef
Hulser, T.P., Wiggers, H., Kruis, F.E., Lorke, A., Sens. Actuators B 109, 13 (2005)CrossRef
Ding, H., Zhang, X., Ram, M.K., Nicolini, C., J. Colloid Interface Sci. 290, 166 (2005)CrossRef
Chao, W., Zhang, X., Xiao, C., Liang, D., Wang, Y., J. Colloid Interface Sci. 325, 198 (2008)CrossRef
Wang, J., Blau, W.J., Appl. Phys. B 91, 521 (2008)CrossRef
He, C., Duan, W., Shi, G., Wu, Y., Ouyang, Q., Song, Y., Appl. Surf. Sci. 255, 4696 (2009)CrossRef
Bohrer, F.I., Colesniuc, C.N., Park, J., Ruidiaz, M.E., Schuller, I.K., Kummel, A.C., Trogler, W.C., J. Am. Chem. Soc. 131, 478 (2009)CrossRef
Bora, M., Schut, D., Baldo, M.A., Anal. Chem. 79, 3298 (2007)CrossRef
Hsieh, J.C., Liu, C.J., Ju, Y.H., Thin Solid Films 322, 98 (1998)CrossRef
Rella, R., Serra, A., Siciliano, P., Tepore, A., Valli, L., Zocco, A., Langmuir 13, 6562 (1997)CrossRef
Brunet, J., Garcia, V.P., Pauly, A., Varenne, C., Lauron, B., Sens. Actuators B 134, 632 (2008)CrossRef
Lee, Y.L., Chang, C.H., Sens. Actuators B 119, 174 (2006)CrossRef
Padma, N., Joshi, A., Singh, A., Deshpande, S.K., Aswal, D.K., Gupta, S.K., Yakhmi, J.V., Sens. Actuators B 143, 246 (2009)CrossRef
Schöllhorn, B., Germain, J.P., Pauly, A., Maleysson, C., Blanc, J.P., Thin Solid Films 326, 245 (1998)CrossRef
Azim-Araghi, M.E., Krier, A., Appl. Surf. Sci. 119, 260 (1997)CrossRef
Sorar, I., Şener, M.K., Tepehan, F.Z., Gül, A., Koçak, M.B., Thin Solid Films 516, 2894 (2008)CrossRef
Karan, S., Basak, D., Mallik, B., Chem. Phys. Lett. 434, 265 (2007)CrossRef
Wright, J.D., Prog. Surf. Sci. 31, 1 (1989)CrossRef
Shi, Y.B., Xiang, J.J., Feng, Q.H., Hu, Z.P., Zhang, H.Q., Guo, J.Y., J. Phys.: Conf. Ser. 48, 292 (2006)
Adam, H., Stanis law, G., Folke, I., Pure Appl. Chem. 63, 1247 (1991)
Bai, H., Shi, G., Sensors 7, 267 (2007)CrossRef
Martin, M., André, J.J., Simon, J.J., J. Appl. Phys. 54, 2792 (1983)CrossRef
Lai, S.L., Chan, M.Y., Fung, M.K., Lee, C.S., Lee, S.T., J. Appl. Phys. 101, 014509 (2007)CrossRef
Muzikante, I., Parra, V., Dobulans, R., Fonavs, E., Latvels, J., Bouvet, M., Sensors 7, 2984 (2007)CrossRef
Ough, E.A., Stillman, M.J., Creber, K.A.M., Can. J. Chem. 71, 1898 (1993)CrossRef
Schauer, F., Novotny, R., Nespurek, S., J. Appl. Phys. 81, 1244 (1997)CrossRef
Meier, H., Organic Semiconductors: Dark- and Photo- conductivity of Organic Solids, (Verlag Chmie GmbH, Weinheim, 1974)Google Scholar
Khrishnakumar, K.P., Menon, C.S., Mater. Lett. 48, 64 (2001)CrossRef
Bohrer, F.I., Sharoni, A., Colesniuc, C., Park, J., Schuller, I.K., Kummel, A.C., Trogler, W.C., J. Am. Chem. Soc. 129, 5640 (2007)CrossRef
Kerp, H.R., Westerdui, K.T., van Veen, A.T., van Faassen, E.E., J. Mater. Res. 16, 503 (2001)CrossRef
Liu, C.J., Shih, J.J., Ju, Y.H., Sens. Actuators B 99, 344 (2004)CrossRef
Azim-Araghi, M.E., Jafari, M.J., Eur. Phys. J. Appl. Phys. 52, 10402 (2010)CrossRef