Şenay, Volkan; Sarıtaş, Sevda; Salari, Maryam Abdolahpour; Muğlu, Günay Merhan

Bu araştırmada, doğru akım (DC) ve radyo frekansı (RF) magnetron püskürtme tekniği kullanılarak cam alttaş üzerinde Ni katkılı hematit (α- Fe2O3) ince film sentezlenmiştir ve üretilen filmin birçok fiziksel özellikleri araştırılmıştır. Elde edilen Ni katkılı α-Fe2O3 ince filmin optik, yapısal ve morfolojik analizleri, UV-VIS spektroskopisi, EDX, X-ışını kırınımı (XRD), taramalı elektron mikroskobu (SEM) ve atomik kuvvet mikroskobu (AFM) kullanılarak belirlenmiştir. Absorbsiyon ölçümüne dayanarak, ince filmin bant aralığı enerji değeri 2,12 eV olarak hesaplanmıştır. XRD analizi, incelenen ince filmin nanokristalin yapıya sahip olduğunu göstermiştir. SEM görüntüsüne göre ince film alttaş boyunca düzgün bir yüzey morfolojisi sergilemiştir. Ayrıca AFM görüntüleri, düşük bir RMS pürüzlülük değeri ortaya koymuştur ve bu da Ni katkılı Fe2O3 ince filminin pürüzsüz bir yüzeye sahip olduğunu göstermektedir.

İncele

Şenay, Volkan; Sarıtaş, Sevda; Salari, Maryam Abdolahpour; Muğlu, Günay Merhan

Iron oxide has recently attracted considerable interest because of its diverse structural and morphological configurations, leading to progressions in various technologies, including ultrahigh magnetic storage, magneto-optical sensors, humidity sensors, and gas sensors. In this research, a thin film of iron oxide doped with chromium was produced on a glass substrate using simultaneous RF and DC magnetron sputtering. The resulting thin film's optical, structural, elemental, and surface characteristics were thoroughly investigated using UV-VIS spectroscopy, XRD, XPS, AFM, and SEM. XRD was utilized to examine the structure of the thin film, which demonstrated good crystallinity. Notably, prominent diffraction peaks at various angles corresponded to specific planes of the normal hematite phase of Fe2O3, as verified by the JCPDS Card No. 33-0664. A significant peak at (104) indicated a sturdy development of the hematite phase. The XPS spectrum analysis approved the presence of iron, oxygen, and chromium in the thin film. This study, known for its straightforward methodology, provides valuable insights into the chromium impurity doping process of Fe2O3, contributing to a deeper understanding of its structural and morphological characteristics.

İncele

Salari, Maryam Abdolahpour; Şenay, Volkan; Muğlu, Günay Merhan; Sarıtaş, Sevda; Kundakçı, Mutlu

In this research, a Sn-doped hematite (α-Fe2O3) thin film on a glass substrate was synthesized using DC and RF magnetron sputtering techniques, and the physical features of the film were analyzed in detail. This study, conducted to investigate the effects of Sn doping on the hematite structure, evaluated the optical and morphological attributes of the thin film using advanced characterization techniques such as UV–VIS spectroscopy, Raman spectroscopy, XRD, SEM, EDS, and AFM. The optical band gap was determined from absorption measurement and calculated to be 2.12 eV. Raman spectroscopy results revealed various characteristic peaks between 100 cm−1 and 1500 cm−1. A strong (214) diffraction peak confirms the enhanced hematite phase formation in the thin film. The crystallite size of the Sn-doped thin film, calculated via Scherrer's formula, is 20 nm. SEM images showed that the thin film exhibited a smooth and homogeneous surface morphology on the glass substrate. According to the EDS results, the atomic doping ratio of Sn in Fe2O3 is 2.84 %. Additionally, AFM analysis confirmed that the Sn-doped α-Fe2O3 thin film had a smooth surface, as indicated by a low RMS (Root Mean Square) roughness value of 8.11 nm. These properties suggest that the thin film could be suitable for optoelectronic applications. The study emphasizes the potential of Sn-doped α-Fe2O3 thin films, particularly for optoelectronic and photocatalytic devices, and underscores the need for further investigation of these materials. Furthermore, it was concluded that these materials should be considered in a broader context for their potential use in various technological applications.

AtıfScopus23·WoS22·OpenAlex25

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