{"id":5642,"date":"2025-02-13T11:33:13","date_gmt":"2025-02-13T10:33:13","guid":{"rendered":"https:\/\/phy.uniri.hr\/?page_id=5642"},"modified":"2026-03-17T12:38:51","modified_gmt":"2026-03-17T11:38:51","slug":"laboratory-for-transport-measurements","status":"publish","type":"page","link":"https:\/\/phy.uniri.hr\/en\/about-the-faculty\/organisation\/division-of-experimental-and-applied-physics\/laboratory-for-transport-measurements\/","title":{"rendered":"Laboratory for Transport Measurements"},"content":{"rendered":"\n<p>Joint Laboratory of Faculty of Physics and <a href=\"http:\/\/www.cmnzt.uniri.hr\/hr\/\">Center for Micro- and Nanosciences and Technologies (NANORI)<\/a>, University of Rijeka.<\/p>\n\n\n\n<p><strong>Room: O-021<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Head of Laboratory<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/portal.uniri.hr\/portfelj\/2518\"><\/a><a href=\"https:\/\/portal.uniri.hr\/portfelj\/2518\">Prof.&nbsp;Ale\u0161&nbsp;Omerzu,&nbsp;PhD<\/a>\n<ul class=\"wp-block-list\">\n<li>E-mail:&nbsp;<a href=\"mailto:aomerzu@phy.uniri.hr\">aomerzu@phy.uniri.hr<\/a><\/li>\n\n\n\n<li>Room: O-112<\/li>\n\n\n\n<li>Tel: (051) 584 634<\/li>\n\n\n\n<li>Curriculum vitae (<a href=\"https:\/\/www.phy.uniri.hr\/files\/ustroj\/djelatnici\/ales_omerzu\/Ales_Omerzu_CV.pdf\">.pdf<\/a>)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-ub-content-toggle wp-block-ub-content-toggle-block\" id=\"ub-content-toggle-block-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" data-mobilecollapse=\"false\" data-desktopcollapse=\"true\" data-preventcollapse=\"false\" data-showonlyone=\"false\">\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-0-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" style=\"color: #000000; \">Associates<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-0-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\">\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/portfelj.uniri.hr\/Portfelj\/Details\/3969\">Karlo Veli\u010dan<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/portal.uniri.hr\/Portfelj\/Details\/4171\">Daria Jardas Babi\u0107, PhD<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/portal.uniri.hr\/Portfelj\/Index\/827\">Assoc. Prof. Robert Peter,\u00a0PhD<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/portal.uniri.hr\/Portfelj\/1348\">Assoc. Prof. Ivana\u00a0Jelovica\u00a0Badovinac,\u00a0PhD<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/portal.uniri.hr\/portfelj\/2379\">Assoc. Prof.\u00a0Ivna\u00a0Kavre\u00a0Piltaver,\u00a0PhD<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/portal.uniri.hr\/Portfelj\/1091\">Assoc. Prof. Iva \u0160ari\u0107 Jankovi\u0107,\u00a0PhD<\/a><\/li>\n<\/ul>\n\n<\/div>\n\t\t<\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-1-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" style=\"color: #000000; \">Research<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-1-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\">\n\n<p>The Laboratory&#8217;s experimental set-up is adapted to measure the transport properties of thin semiconductor films. The types of measurements performed are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>measurements of current &#8211; voltage (I &#8211; V) characteristics of samples, which determine the specific resistance \/ conductivity of the material;<\/li>\n\n\n\n<li>Hall voltage measurements, with which we determine the sign and concentration of charge carriers in a semiconductor;<\/li>\n\n\n\n<li>measurements of the time dependence of the photocurrent, with which we monitor the slow dynamics of photoexcitation in materials.<\/li>\n<\/ul>\n\n\n\n<p>The material we primarily deal with is zinc oxide (ZnO) in the form of thin films with a thickness of 10 nm to 100 nm synthesized by the Atomic Layer Deposition (ALD) method. ZnO is a semiconductor with a wide band gap (3.2 \u2013 3.4 eV). The property that sets it apart from other semiconducting metal oxides is the possibility of a large concentration of point defects (cavities, interstitial atoms) in the crystal structure. These defects largely determine the physical properties of ZnO. Thus, for example, the specific resistance of ZnO can take on values \u200b\u200bthat extend over six orders of magnitude \u2013 from 10<sup>-3<\/sup> \u03a9cm to 10<sup>3<\/sup> \u03a9cm, depending on the concentration of defects. By changing the parameters of the ALD synthesis, we can obtain zinc oxide films with very different physical properties. Transport measurements provide us with useful information about the synthesized materials that serve us in further research directed towards ZnO applications in the fields of photocatalysis and photovoltaics.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image-6.png\"><img fetchpriority=\"high\" decoding=\"async\" width=\"747\" height=\"596\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image-6.png\" alt=\"\" class=\"wp-image-3978\" style=\"width:auto;height:400px\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image-6.png 747w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image-6-300x239.png 300w\" sizes=\"(max-width: 747px) 100vw, 747px\" \/><\/a><figcaption class=\"wp-element-caption\">Figure: Time response of the photocurrent in a ZnO thin film upon photoexcitation with UV light.<\/figcaption><\/figure>\n\n<\/div>\n\t\t<\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-2-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" style=\"color: #000000; \">Publications<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-2-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\">\n\n<ol class=\"wp-block-list\">\n<li><strong>R. Peter, A. Omerzu, I. Kavre Piltaver<\/strong>, R. Speranza, K. Salamon, M. Podlogar, <strong>K. Velican<\/strong>, M. Percic, <strong>M. Petravic<\/strong>, <em>Large enhancement of visible light photocatalytic efficiency of ZnO films doped in-situ by copper during atomic layer deposition growth<\/em>, Ceram. Int. 49 (22), 35229-35238.<\/li>\n\n\n\n<li><strong>D. Jardas, A. Omerzu, R. Peter, I.Kavre Piltaver, M. Petravi\u0107<\/strong>, <em>Photocatalytic Activity Under UV and Solar Illumination of Thin ZnO Films Grown by Atomic Layer Deposition<\/em>, Proceedings of the 3rd International Congress on Advanced Materials Sciences and Engineering, AMSE 2022.<\/li>\n\n\n\n<li><strong>A. Omerzu, R. Peter, D. Jardas<\/strong>, I. Turel, K. Salamon, M. Podlogar, D. Vengust, <strong>I. Jelovica Badovinac, I. Kavre Piltaver, M. Petravic<\/strong>, <em>Large enhancement of photocatalytic activity in ZnO thin films grown by plasma-enhanced atomic layer deposition<\/em>, Surf. Interfaces 23 (2021) 100984.<\/li>\n\n\n\n<li><strong>R. Peter<\/strong>, K. Salamon, <strong>A. Omerzu<\/strong>, J. Grenzer, <strong>I. Jelovica Badovinac, I. Saric, M. Petravic<\/strong>, <em>Role of Hydrogen-Related Defects in Photocatalytic Activity of ZnO Films Grown by Atomic Layer Deposition<\/em>, J. Phys. Chem. C 124 (2020), 8861<\/li>\n\n\n\n<li><strong>I. Jelovica Badovinac, R.Peter, A. Omerzu<\/strong>, K. Salamon, <strong>I. \u0160ari\u0107<\/strong>, A. Samar\u017eija, M. Per\u010di\u0107, <strong>I. Kavre Piltaver<\/strong>, G. Ambro\u017ei\u0107, <strong>M. Petravi\u0107<\/strong>, <em>Grain size effect on photocatalytic activity of TiO2 thin films grown by atomic layer deposition<\/em>, Thin Solid Films 709 (2020) 138215.<\/li>\n\n\n\n<li><strong>A.Omerzu, I. Saric, I. Kavre Piltaver, M. Petravic<\/strong>, T. Kapun, J. Zule, S. Stifter, K. Salamon, <em>Prevention of spontaneous combustion of cellulose with a thin protective Al2O3 coating formed by atomic layer deposition<\/em>, Surf. Coat. Technol. 333 (2018) 81.<\/li>\n\n\n\n<li><strong>A. Omerzu<\/strong>, M. Borov\u0161ak: <em>Long-range correlated electron transport in M-DNA<\/em>, Chemical Physics 478 (2016) 45.<\/li>\n\n\n\n<li>M. Strojnik, <strong>A. Omerzu<\/strong>, A. Majki\u0107, P. M. Mihailovic, J. Lukan, G. Bavdek, G. Bratina, D. Cvetko, P. Topolovsek, D. Mihailovic: <em>Valence band and energy gap of MoSI molecular wires<\/em>, Langmuir 27 (2011) 4296.<\/li>\n\n\n\n<li><strong>A. Omerzu<\/strong>, B. Anzelak, I. Turel, J. Strancar, A. Potocnik, D. Arcon, I. Arcon, D. Mihailovi\u0107, H. Matsui: <em>Strong correlations in highly electron-doped Zn(II)-DNA complexes<\/em>, Phys. Rev. Lett. 104 (2010),156804.<\/li>\n\n\n\n<li><strong>A. Omerzu<\/strong>, M. Licer, T. Mertelj, V. V. Kabanov, D. Mihailovic: <em>Hole interactions with molecular vibrations on DNA<\/em>, Phys. Rev. Lett 93 (2004) 218101.<\/li>\n\n\n\n<li>T. Vuletic, D. Herman, N. Biskup, M. Pinteric, <strong>A. Omerzu<\/strong>, S. Tomic, M. Nagasawa: <em>Single-particle and spin-density wave charge dynamics in (TMTSF)(2)PF6 and (TMTSF)(2)AsF6: A comparative overview<\/em>, J. Phys. IV 9 (1999) 275.<\/li>\n\n\n\n<li><strong>A. Omerzu<\/strong>, D. Mihailovic, N. Biskup, O. Milat, S. Tomic: <em>Electrical transport measurements on TDAE-C-60 single crystals<\/em>, Synthetic Met. 85 (1997) 1723.<\/li>\n\n\n\n<li><strong>A. Omerzu<\/strong>, D. Mihailovic, S. Tomic, O. Milat, N. Biskup: <em>Electrical conductivity in dynamically orientationally disordered systems: ac and dc measurements in ferromagnetic single crystals of TDAE-C-60<\/em>, Phys. Rev. Lett. 77 (1996) 2045.<\/li>\n<\/ol>\n\n<\/div>\n\t\t<\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-3-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\" style=\"color: #000000; \">Research equipment<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-3-6d4b7b75-dc6a-446d-8bb9-420c6e3fc81c\">\n\n<h4 class=\"wp-block-heading\">System for measuring electrical conductivity and the Hall effect<\/h4>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/20180212_121137.jpg\"><img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/20180212_121137-1024x768.jpg\" alt=\"\" class=\"wp-image-3640\" style=\"width:400px\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/20180212_121137-1024x768.jpg 1024w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/20180212_121137-300x225.jpg 300w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/20180212_121137-768x576.jpg 768w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/20180212_121137-1536x1152.jpg 1536w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/20180212_121137.jpg 2016w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Current-voltage source <em>Keithley<\/em> 2401<\/li>\n\n\n\n<li>Electromagnet: 0 &lt; B &lt; 0.6 T<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Programmable furnace Carbolite Gero<\/h4>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/carbolite-gero-ctf.jpg\"><img decoding=\"async\" width=\"412\" height=\"309\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/carbolite-gero-ctf.jpg\" alt=\"\" class=\"wp-image-3632\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/carbolite-gero-ctf.jpg 412w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/carbolite-gero-ctf-300x225.jpg 300w\" sizes=\"(max-width: 412px) 100vw, 412px\" \/><\/a><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">UV-Vis spectrophotometer EVOLUTION 201<\/h4>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/UVVis.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"589\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/UVVis-1024x589.jpg\" alt=\"\" class=\"wp-image-3641\" style=\"width:400px\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/UVVis-1024x589.jpg 1024w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/UVVis-300x172.jpg 300w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/UVVis-768x441.jpg 768w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/UVVis-1536x883.jpg 1536w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/03\/UVVis.jpg 1731w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>measurement of optical absorption in the spectral range from 200 nm to 1100 nm<\/li>\n<\/ul>\n\n<\/div>\n\t\t<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Joint Laboratory of Faculty of Physics and Center for Micro- and Nanosciences and Technologies (NANORI), University of Rijeka. Room: O-021 Head of Laboratory<\/p>\n","protected":false},"author":4,"featured_media":5542,"parent":5584,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"ub_ctt_via":"","footnotes":""},"class_list":["post-5642","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"featured_image_src":"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/06\/O-Fakultetu.jpg","_links":{"self":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5642","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/comments?post=5642"}],"version-history":[{"count":7,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5642\/revisions"}],"predecessor-version":[{"id":7861,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5642\/revisions\/7861"}],"up":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5584"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/media\/5542"}],"wp:attachment":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/media?parent=5642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}