Synthesis and Characterization of Sb+5/Mg+2 Cosubstituted In2O3 Transparent Conductive Oxides by Solid State Reaction Method at Different Temperatures

Abstract

In modern technology, transparent conductive oxides play a critical role. One of the most popular transparent conductive oxides is indium tin oxide. However, due to its scarcity, indium is a costly metal. In this study, high temperature solid state reactions method was used to synthesize Sb+5/Mg+2 cosubstituted In2O3 transparent conductive oxide materials (Mg2X/3In2-XSbX/3O3 named MISO). By decreasing the indium ratio and substituting Sb+5/Mg+2, transparent conductive oxides with low costs were produced in this work, and the influence of the proportion of substituted material on the structural, electrical, and optical properties of indium oxide was examined with XRD, Hall measurement system and UV-Vis spectrometer respectively. The samples were prepared as powder and pellet at 1250 °C and 1350 °C temperatures. It was observed that samples crystallize in bixbyite structure. The band gaps of MISO samples produced at 1350 °C were found to be lower than those synthesized at 1250 °C. Electrical analyzes with four-point probes showed that the materials have n-type electrical conductivity.

Keywords

• In2O3
• Sb2O5
• MgO
• Solid state method
• XRD

Sb+5/Mg+2 Çift İkameli In2O3 Şeffaf İletken Oksitlerin Farklı Sıcaklıklarda Katı Hal Reaksiyon Yöntemi ile Sentezi ve Karakterizasyonu

Abstract

Modern teknolojide saydam iletken oksitler kritik bir rol oynamaktadır. En popüler saydam iletken oksitlerden biri indiyum kalay oksittir. Ancak, az bulunurluğu nedeniyle indiyum pahalı bir metaldir. Bu çalışmada, Sb+5/Mg+2 birlikte ikame edilmiş In2O3 saydam iletken oksit malzemelerin (MISO olarak adlandırılan Mg2X/3In2-XSbX/3O3) sentezlenmesi için yüksek sıcaklıkta katı hal reaksiyonları yöntemi kullanılmıştır. Bu çalışmada indiyum oranı düşürülerek ve Sb+5/Mg+2 ikame edilerek düşük maliyetli saydam iletken oksitler üretilmiş ve ikame malzeme oranının indiyum oksidin yapısal, elektriksel ve optiksel özelliklerine etkisi sırasıyla XRD, Hall ölçüm sistemi ve UV-Vis spektrometresi ile incelenmiştir. Numuneler 1250 °C ve 1350 °C sıcaklıklarda toz ve pelet olarak hazırlanmıştır. Numunelerin biksbit yapısında kristalleştiği gözlemlenmiştir. 1350 °C'de üretilen MISO örneklerinin bant boşlukları, 1250 °C'de sentezlenenlerden daha düşük bulunmuştur. Dört noktalı problarla yapılan elektriksel analizler, malzemelerin n-tipi elektrik iletkenliğine sahip olduğunu göstermiştir.

Keywords

• In2O3
• Sb2O5
• MgO
• Katıhal reaksiyon metodu
• XRD

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