Abstract
The charge-transport behaviour in pure and chloranil (Chl) doped ethyl cellulose (EC) system has been studied by measuring the dependence of current on field, temperature, electrode material and dopant concentration. The role of doping molecular concentration in the polymer matrix and modification in the conduction characteristics are studied. Lowering of the activation energy due to doping was observed. The current was found to increase with an increase in the chloranil concentration. An explanation for this has been attempted on the basis of formation of molecular aggregates between chloranil molecules and ethoxy groups of ethyl cellulose. It is suggested that chloranil occupies interstitial positions between the polymer chains and assists in carrier transportation by reducing the hopping barriers. The current-voltage characteristics of different samples are analyzed using space charge limited current theory and quantitative information about the transport parameters is derived. The values of effective drift mobility and trapped charge carrier concentration which result in the build up of space charge have been calculated.
Similar content being viewed by others
References
Chopra K L, Rastogi A C and Malhotra G L 1971Thin Solid Films 24 125
Davies W K and Lock P J 1973J. Electrochem. Soc. 120 266
Jonscher A K 1967Thin Solid Films 1 213
Jonscher A K and Ansari A A 1971Philos. Mag. 23 205
Khare P K and Srivastava A P 1992Thin Solid Films 208 233
Khare P K and Singh Ranjeet 1994Polym. Int. 34 407
Khare P K and Chandok R S 1995aPolym. Int. 36 35
Khare P K and Chandok R S 1995bJ. Polym. Mater. 12 23
Khare P K and Jain S K 1997Indian J. Pure & Appl. Phys. 35 408
Khare P K, Sandeep Shrivastava and Srivastava A P 1994Indian J. Phys. A68 129
Khare P K, Keller J M, Gaur M S, Singh Ranjeet and Datt S C 1996Polym. Int. 36 303
Khare P K, Jain S K and Paliwal S K 1997aBull. Mater. Sci. 20 699
Khare P K, Kuraria R K and Jain S K 1997bBull. Mater. Sci. 14 133
Khare P K, Paliwal S K, Kuraria R K, Vishwakarma H L, Ashish Verma and Jain S K 1998aBull. Mater. Sci. 21 139
Khare P K, Ashish Verma and Paliwal S K 1998bBull. Mater. Sci. 21 207
Kosaki M, Yoda M and Ieda M 1971J. Phys. Soc. Jap. 31 1598
Kulshrestha Y K and Srivastava A P 1980Thin Solid Films 69 269
Lamb D R 1967Electronic conduction mechanism in thin insulating films (London: Methuen & Co.)
Lampert M A and Mark P 1970Current injection in solids (NY: Academic Press) p. 21
LaxmiNarayana K, Dasardhudu and, Rao N 1994Polym. Int. 35 315
Marikhin V A, Shitsker A I and Yastrebinskii A A 1965Sov. Phys. Solid State 7 352
Mark H F, Gaylord N G and Bikalas N M (eds) 1965Encyclopedia of polymer science and technology (NY: Interscience)
Ranjeet Singh, Khare P K and Reeta Singh 1997Indian J. Phys. A71 39
Shrivastava S K, Ranade J D and Srivastava A P 1979Jpn J. Appl. Phys. 18 2303
Simmons J G 1970Handbook of thin film technology (NY: McGraw Hill)
Sinha H C, Talwar I M and Srivastava A P 1981Thin Solid Films 82 229
Singh Ranjeet and Srivastava A P 1972Indian J. Pure & Appl. Phys. 10 811
Upadhyay J K, Khare P K, Ashish Verma and Paliwal S K 1998J. Polym. Mater. 15 289
Wintle H J 1971Jpn J. Appl. Phys. 10 659
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Khare, P.K., Pandey, R.K. & Jain, P.L. Electrical transport in ethyl cellulose-chloranil system. Bull Mater Sci 23, 325–330 (2000). https://doi.org/10.1007/BF02720091
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02720091