{"id":11003,"date":"2026-09-05T13:45:03","date_gmt":"2026-09-05T05:45:03","guid":{"rendered":"\/jase\/?post_type=tkuisotope&#038;p=11003"},"modified":"2026-09-14T18:18:30","modified_gmt":"2026-09-14T10:18:30","slug":"study-of-electrical-transport-properties-in-thermally-evaporated-cu2s-thin-films","status":"publish","type":"tkuisotope","link":"\/jase\/?tkuisotope=study-of-electrical-transport-properties-in-thermally-evaporated-cu2s-thin-films","title":{"rendered":"Study of Electrical Transport Properties in Thermally Evaporated Cu2S Thin Films"},"content":{"rendered":"\n<div class=\"wp-block-tkuwpbs5-bs5-row row article-info\">\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-3 align-self-start\">\n<p><i class=\"fa fa-folder\" aria-hidden=\"true\"><\/i>&nbsp;<a href=\"\/jase\/?page_id=10956\" data-type=\"page\" data-id=\"10956\">2012<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-3 align-self-start\">\n<p><i class=\"fa fa-folder-open\" aria-hidden=\"true\"><\/i>&nbsp;<a href=\"\/jase\/?page_id=10954\" data-type=\"page\" data-id=\"10954\">Volume 15, Issue 4<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-6 align-self-start\">\n<div class=\"wp-block-tkuwpbs5-bs5-div dv_publish\" data-aos=\"normal\"><div class=\"wp-block-post-date\"><time datetime=\"2026-09-05T13:45:03+08:00\">2026-09-05<\/time><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-row row\">\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-5 align-self-start\">\n<div class=\"wp-block-tkuwpbs5-bs5-div au-ol\" data-aos=\"normal\">\n<p>M. Ramya<sup>1<\/sup><a href=\"mailto:ramsthangam@gmail.com\"><i class=\"fa fa-envelope\"><\/i><\/a> and S. Ganesan<sup>2<\/sup><\/p>\n\n\n\n<p style=\"font-size:14px\"><sup>1<\/sup>Department of Physics, Sri Shakthi Institute of Engg. &amp; Tech., Coimbatore 641 062, Tamil Nadu, India<\/p>\n\n\n\n<p style=\"font-size:14px\"><sup>2<\/sup>Department of Physics, Government College of Technology, Coimbatore 641 013, Tamil Nadu, India<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-div\" style=\"margin-top:var(--wp--preset--spacing--40)\" data-aos=\"normal\">\n<p>Received:\u00a0August 10, 2011<br>Accepted:\u00a0March 13, 2012<br>Publication Date:\u00a0Decmber 1,2012<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-column col-md-7 align-self-start clk=\u5716\u7247\"><img decoding=\"async\" src=\"\/jase\/wp-content\/uploads\/2026\/09\/15_4_12.jpg\" class=\"img-fluid img-fluid mx-auto d-block\" alt=\"\u4e0a\u50b3\u5716\u7247\">\n\n\n<p class=\"has-text-align-center\">Variation of current vs. square root of applied field measured at different temperature for Cu<sub>2<\/sub>S film of 1000 \u00c5 thickness.<\/p>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-small-font-size\"><i class=\"fab fa-creative-commons\"><\/i>&nbsp;<strong>Copyright&nbsp;<\/strong>The Author(s). This is an open access article distributed under the terms of the&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\">Creative Commons Attribution&nbsp;License (CC BY 4.0)<\/a>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.<\/p>\n\n\n\n<p>Download Citation:&nbsp; <a href=\"\/jase\/wp-content\/uploads\/2026\/09\/V15.4.12.bib\" data-type=\"attachment\" data-id=\"11445\" target=\"_blank\" rel=\"noreferrer noopener\">BibTeX <\/a>| <a href=\"http:\/\/dx.doi.org\/10.6180\/jase.2012.15.4.12\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/dx.doi.org\/10.6180\/jase.2012.15.4.12<\/a>&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"btn btn-primary article-btn\"><a href=\"\/jase\/wp-content\/uploads\/2026\/09\/12-10001_V15i4.pdf\" data-type=\"attachment\" data-id=\"11468\" target=\"_blank\" rel=\"noreferrer noopener\">Download PDF<\/a><\/p>\n\n\n\n<div style=\"height:24px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Cu<sub>2<\/sub>S was synthesized by vacuum evaporation under a pressure of 10<sup>-6<\/sup> torr at an evaporation rate of 3 \u00c5\/sec. The electrical properties of Cu<sub>2<\/sub>S thin film were studied using current-voltage characteristics. The conductivity was found to exhibit two distinct mechanisms within the applied field i.e., low voltage region and high voltage region. The most probable conduction mechanism prevailing in Cu<sub>2<\/sub>S thin film is found to be Poole-Frenkel effect. Activation energy has been calculated for different thicknesses and is found that activation energy decreases with increase in film thickness. Dielectric constant of the film was measured using impedance analyzer. Plot of dielectric constant vs. frequency shows normal dielectric behavior of the film. Photocurrent of Cu<sub>2<\/sub>S film increases with increase in film thickness.<\/p>\n\n\n\n<p><em>Keywords:&nbsp;I-V Characteristics; C-V Characteristics; Dielectric Effect; Photocurrent<\/em><\/p>\n\n\n\n<div style=\"height:2rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-tkuwpbs5-bs5-div ref_ol\" data-aos=\"normal\">\n<ol>\n<li>[1] Grozdanov, I. and Najdoski, M., &#8220;Optical and Electrical Properties of Copper Sulphide Films of Variable Composition,&#8221; Journal of Solid State Chemistry, Vol. 114, pp. 469-475 (1995).<\/li>\n<li>[2] Sagade, A. A. and Sharma, R., &#8220;Copper Sulphide (Cu<sub>x<\/sub>S) as an Ammonia Gas Working at Room Temperature,&#8221; Sensors and Actuators B: Chemical, Vol. 133, pp. 135-143 (2008).<\/li>\n<li>[3] Thongtem, T., Phuruangrat, A. and Thongtem, S., &#8220;Characterization of Copper Sulphide Nanostructured Spheres and Nanotubes Synthesized by Microwave Assisted Solvo Thermal Method,&#8221; Materials Letters, Vol. 64, pp. 136-139 (2010).<\/li>\n<li>[4] Yu, X. and An, X., &#8220;Controllable Hydrothermal Synthesis of Cu<sub>2<\/sub>S Nanowires on the Copper Substrate,&#8221; Materials Letters, Vol. 64, pp. 252-254 (2010).<\/li>\n<li>[5] Zhang, Y. C., Qiao, T. and Hu, X. Y., &#8220;A Simple Hydrothermal Route to Nanocrystalline CuS,&#8221; Journal of Crystal Growth, Vol. 268, pp. 64-70 (2004).<\/li>\n<li>[6] Li, F., Wu, J. F., Qin, Q., Li, Z. and Huang, X., &#8220;Controllable Synthesis, Optical and Photo Catalytic Properties of CuS Nanomaterials with Hierarchial Structures,&#8221; Powder Technology, Vol. 189, pp. 267-274 (2010).<\/li>\n<li>[7] Ashour, A., &#8220;The Physical Characteristics of Cu<sub>2<\/sub>S\/CuS Thin Film Solar Cell,&#8221; Journal of Optoelectronics and Advanced Materials, Vol. 8, pp. 1447-1451 (2006).<\/li>\n<li>[8] Wang, S. Y., Wang, W. and Lu, Z. H., &#8220;Asynchronous Pulse Ultrasonic Spray Pyrolysis Deposition of Cu<sub>x<\/sub>S (X-1,2) Thin Films,&#8221; Material Science and Engineering: B, Vol. 103, pp. 184-188 (2003).<\/li>\n<li>[9] Pathan, H. M., Desai, J. D. and Lokhande, C. D., &#8220;Modified Chemical Deposition and Physio-Chemical Properties of Copper Sulphide (Cu<sub>2<\/sub>S) Thin Films,&#8221; Applied Surface Science, Vol. 202, pp. 47-56 (2002).<\/li>\n<li>[10] Podder, J., Kobayashi, R. and Ichimura, M., &#8220;Photochemical Deposition of Cu<sub>x<\/sub>S Thin Films from Aqueous Solutions,&#8221; Thin Solid Films, Vol. 472, pp. 71-75 (2005).<\/li>\n<li>[11] Ramya, M. and Ganesan, S., &#8220;Study of Thickness Dependent Characteristics of Cu<sub>2<\/sub>S Thin Films for Various Applications,&#8221; Iranian Journal of Material Science and Engineering, Vol. 8, pp. 34-40 (2011).<\/li>\n<li>[12] Mazumdar, N., Sarma, R., Sarma, B. K. and Das, H. L., &#8220;Photoconductivity of ZnTe Thin Films at Elevated Temperatures,&#8221; Bulletin of Material Sciences, Vol. 29, pp. 11-14 (2006).<\/li>\n<li>[13] Gould, R. D. and Ismail, B. B., &#8220;Poole-Frenkel Conductivity in Evaporated CdTe Thin Films with PbCl<sub>2<\/sub>,&#8221; Vacuum, Vol. 50, pp. 99-101 (1998).<\/li>\n<li>[14] Babkir, S. S., Ansari, A. A. and Al-Twarqi, N. M., &#8220;Activation Energy and Density of States of CdTe Thin Films from Temperature Dependent I-V Measurements,&#8221; Materials Chemistry and Physics, Vol. 127, pp. 296-299 (2011).<\/li>\n<li>[15] Gogai, S. and Barua, K., &#8220;D.C Electrical Properties of Vacuum Deposited CdTe Films,&#8221; Thin Solid Films, Vol. 239, pp. 205-210 (1999).<\/li>\n<li>[16] Sathyamoorthy, R., Sharmila, C., Sudhagar, P., Chandramohan, C. and Velumani, S., &#8220;Electrical Conduction in Zinc Phosphide Thin Films,&#8221; Materials Characterization, Vol. 58, pp. 730-734 (2007).<\/li>\n<li>[17] El-Samanoudy, M. M., &#8220;Modified Poole-Frenkel Mecahnisms in Ge<sub>25<\/sub>Bi<sub>x<\/sub>Sb<sub>15-x<\/sub>S<sub>60<\/sub> Thin Films,&#8221; Applied Surface Science, Vol. 207, pp. 219-226 (2003).<\/li>\n<li>[18] Kalita, P. K. R., Sarma, B. K. and Das, H. L., &#8220;Space Charge Limited Conduction in CdSe Thin Films,&#8221; Bulletin of Material Sciences, Vol. 26, pp. 613-617 (2003).<\/li>\n<li>[19] Yildirim, S., Ulutas, K., Deger, D., Zayim, E. O. and Turhan, I., &#8220;Dielectric Properties of Sol-Gel Derived Ta<sub>2<\/sub>O<sub>5<\/sub> Thin Films,&#8221; Vacuum, Vol. 77, pp. 329-335 (2005).<\/li>\n<li>[20] Mott, N. F., Proc. R. Soc., London, Vol. 171, p. 27 (1937).<\/li>\n<li>[21] Schottky, W., Z. Phys., Vol. 118, p. 539 (1942).<\/li>\n<li>[22] Nandi, S. K., Chaterjee, S., Samanta, S. S., Dalpati, G. K., Bose, P. K., Varma, S., Patil, S. and Maiti, C. K., &#8220;Electrical Properties of Ta<sub>2<\/sub>O<sub>5<\/sub> Films Deposited on ZnO,&#8221; Bulletin of Material Sciences, Vol. 26, pp. 365-369 (2003).<\/li>\n<li>[23] Maissel, L. I. and Glang, R., Hand Book of Thin Film Technology, Mc-Graw Hill Book Company, New York (1970).<\/li>\n<li>[24] Lokhande, C. D., Pathan, H. M., Giersig, M. and Tributsch, H., &#8220;Preparation of Zn<sub>x<\/sub>(0,S) Thin Films Using Modified Chemical Bath Deposition Method,&#8221; Applied Surface Science, Vol. 187, pp. 101-107 (2002).<\/li>\n<li>[25] Ubale, A. U., Choudhari, D. M., Kantale, J. S., Mitkari, V. N., Nikam, M. S., Gawande, W. J. and Patil, P. P., &#8220;Synthesis of Nanostructured Thin Films by Chemical Route at Room Temperature and Investigation of Their Size Dependent Physical Properties,&#8221; Journal of Alloy and Compounds, Vol. 509, pp. 9249-9254 (2011).<\/li>\n<li>[26] Ramya, M. and Ganesan, S., &#8220;Annealing Effects on Resistivity Properties of Vacuum Evaporated Cu<sub>2<\/sub>S Thin Films,&#8221; International Journal of Pure and Applied Physics, Vol. 3, pp. 243-249 (2010).<\/li>\n<li>[27] Ghosh, P. K., Jana, S., Nandy, S. and Chattopadhyay, K. K., &#8220;Size-Dependent Optical and Dielectric Properties of Nanocrystalline ZnS Thin Films Synthesized via rf-Magnetron Sputtering Technique,&#8221; Materials Research Bulletin, Vol. 42, pp. 505-514 (2007).<\/li>\n<li>[28] Ravinder, D. and Kumar, K. V., &#8220;Dielectric Behaviour of Erbium Substituted Mn-Zn Ferrites,&#8221; Bulletin of Material Sciences, Vol. 24, pp. 505-509 (2001).<\/li>\n<li>[29] Ambily, S., Xavier, F. P. and Menon, C. S., &#8220;Photoconductivity Measurements in Lead Pthalocyanine Thin Films,&#8221; Materials Letter, Vol. 41, pp. 5-8 (1999).<\/li>\n<li>[30] Gill, W. D. and Rube, R. H., &#8220;Photovoltaic Properties of Cu<sub>2<\/sub>S\/CdS Heterojunctions,&#8221; Journal of Applied Physics, Vol. 41, pp. 3731-3738 (1970).<\/li>\n<\/ol>\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"author":3,"template":"wp-custom-template-detail-4-aricles","meta":{"_uag_custom_page_level_css":""},"categories":[1855,6,1859],"tags":[1953],"acf":[],"uagb_featured_image_src":[],"uagb_author_info":{"display_name":"\u6797\u923a\u6db5","author_link":"\/jase\/?author=3"},"uagb_comment_info":0,"uagb_excerpt":"&nbsp;Copyright&nbsp;The Author(s). This is an open access article distributed under the terms of the&nbsp;Creative Commons Attribution&nbsp;License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited. Download Citation:&nbsp; BibTeX | http:\/\/dx.doi.org\/10.6180\/jase.2012.15.4.12&nbsp;&nbsp; Download PDF Cu2S was synthesized by vacuum evaporation under a pressure of 10-6&hellip;","_links":{"self":[{"href":"\/jase\/index.php?rest_route=\/wp\/v2\/tkuisotope\/11003"}],"collection":[{"href":"\/jase\/index.php?rest_route=\/wp\/v2\/tkuisotope"}],"about":[{"href":"\/jase\/index.php?rest_route=\/wp\/v2\/types\/tkuisotope"}],"author":[{"embeddable":true,"href":"\/jase\/index.php?rest_route=\/wp\/v2\/users\/3"}],"wp:attachment":[{"href":"\/jase\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/jase\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11003"},{"taxonomy":"post_tag","embeddable":true,"href":"\/jase\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}