Isıl Püskürtme Yöntemi ile Büyütülen SnO2 nin Karakteristik Özelliklerine Sb-Katkısının Etkisi

Bu çalışma Sb-katkısının SnO2 nin kristal, yüzeysel, optik ve elektriksel özelliklerine etkisini sunmaktadır. Sb katkılı numuneler ısıl püskürtme yöntemi ile cam altlıklar üzerine büyütmüştür. Piramit ve çok yüzlü şekilli tetragonal Sb katkılı SnO2 taneleri XRD ve SEM analizleri ile belirlenmiştir. Filmler için dejenere n-tipi iletkenlik özelliği elektriksel ve optiksel karakterizasyonlar ile belirlenmiştir. Özdirenç ve tabaka direnci değerleri ilk olarak ağırlıkça % 1.5 Sb içeriği ile azalmıştır ve sonra bu değerler daha fazla Sb içeriği ile artmıştır. Fakat taşıyıcı konsantrasyonu ağırlıkça % 2.5 Sb içeriği ile artmıştır, sonra ise % 3.5 Sb içeriği ile azalmaya başlamıştır. Numunelerin optik bant aralığı Sb katkılama ile azalma eğilimindedir. Bu çalışmada elde edilen sonuçlardan Sb katkılı kalay oksit ince filmlerin optoelektronik uygulamalarda kullanılabileceği söylenebilir.

Sb-Contribution Influence on the Characteristics of Spray-Coated SnO2

This work presents that the impact of Sb-additive on the crystalline, morphological, optical, and electrical features of SnO2. Sb-incorporated samples were fabricated on glass substrates with spray pyrolysis. Pyramidal and polyhedron shaped tetragonal Sb-introduced SnO2 grains were identified with XRD and SEM analysis. The degenerate n-type character for films was determined by electrical and optical characterizations. The resistivity and sheet resistance values initially decreased with Sb-content until 1.5 wt. %, then they increased with further Sb-level. However, carrier concentration increased with 2.5 wt. % Sb-contribution, then it started to goes down with 3.5 wt. %. The optical band-gap values of samples had a decreasing tendency with Sb-doping. From the results obtained in the present study, it is said that Sb-incorporated tin oxide films can be utilized in optoelectronic implements.

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