Monoetanolamin Miktarının ZnO İnce Filmlerin Kristallenmesi Üzerine Etkisi

Year 2019, , 155 - 164, 31.05.2019

Ahmet Tumbul

https://doi.org/10.29233/sdufeffd.513412

Cited By: 2

Abstract

Çinko oksit yarıiletkeni
sahip olduğu değiştirilebilir yasak enerji aralığı ve görünür ışık bölgesindeki
yüksek optik geçirgenliğinden dolayı opto-elektronik uygulamalar için çok sık
kullanılan yarıiletkenlerden biridir. Farklı miktarlarda kullanılan monoethanolamin
miktarının ZnO ince filmlerin yapısal, morfolojik ve optik özellikleri üzerine
etkileri bu çalışmada incelenmiştir. Nano-fiber yapılı ZnO ince filmler başka
herhangi bir işlem gerektirmeden cam altlık üzerine, basit sol-jel daldırma
yöntemi kullanılarak sentezlenmiştir. Monoetanolamin miktarı artırıldığında
örneklerin XRD pik şiddetlerinin arttığı ve kristal kusurlarının azaldığı
gözlemlenmiştir. Bunun yanında, monoetanolamin miktarı arttığında mikro-fiber
ZnO taneciklerinin altlık yüzeyini oldukça yoğun bir şekilde kapladığı
görünmüştür. Ayrıca optik ölçümler sonucu stabilizer olarak kullanılan monoethanolamin
miktarının artışı ile ince filmlerin görünür ışık bölgesindeki geçirgenliğinin
arttığı görülmüştür.   

Keywords

ZnO, Sol-jel metodu, Fotoluminesans, İnce filmler, Opto-elektronik

Effect of Monoethanolamine Content on the Crystallinity of ZnO Thin Films

Abstract

ZnO
is one of the most widely used semiconductors for opto-electronic applications
due to its tunable band gap energy, high optical transparency in visible region. The effect of different monoethanolamine (MEA)
ratio on structural, morphological and optical properties of ZnO thin films was
investigated in this study. A nano-fiber like structured ZnO was fabricated
through facile sol-gel dip coating process on glass substrates without any
further treatment. We observed that the peak intensity of samples increased and
the amount of defects in the crystal could be further decreased by rising its of
monoethanolamine. Besides, the micro-fiber like grains of the ZnO covered the
glass surface quite densely when the monoethanolamine content increased. The
optical study showed that the transparency of the films could be enhanced by
increasing the amount of stabilizer.

Keywords

ZnO, Thin films, Sol-gel method, Photoluminescence, Opto-electronic

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