GÜNEŞ PİLİ UYGULAMALARI İÇİN CdS İNCE FİLMLERİN OPTİK ÖZELLİKLERİNİN MALTOZ KATKISIYLA GELİŞTİRİLMESİ

Yıl 2017, Cilt: 22 Sayı: 2, 1 - 10, 20.08.2017

Ersin Yücel

https://doi.org/10.17482/uumfd.335416

Öz

Kimyasal banyo depolama
(CBD) yöntemi kullanılarak nano yapılı kadmiyum sülfit (CdS) ince filmler cam
yüzeyler üzerinde üretilmiştir. Farklı konsantrasyonlardaki maltoz (C₁₂H₂₂O₁₁,α-D-Glukopiranozil-(1→4)-α-D-Glukopiranoz), büyüme çözeltilerinde bir katkı
maddesi olarak kullanılmıştır. Maltozun CdS ince filmlerin yapısal, morfolojik
ve optik özellikleri üzerindeki etkisi X-Işını kırınımı (XRD), taramalı
elektron mikroskobu (SEM) ve UV-Vis spektrofotometre kullanılarak
incelenmiştir. Analizler, filmlerin kristal büyüklüklerinin maltoz
konsantrasyonunun artmasıyla azaldığını ve filmlerin homojenliğinin maltoz
konsantrasyonunun aratmasıyla arttığını göstermiştir. Ayrıca, hem optik yasak
enerji bant aralığı hem de optik geçirgenlik değerleri maltoz konsantrasyonunun
artmasıyla artmıştır. Bu sonuçlar büyüme çözeltisi içindeki maltoz
konsantrasyonunun artmasının nano yapılı CdS filmlerin yüzey morfolojilerini,
kristal yapılarını, yasak enerji bant aralığını ve optik geçirgenlik
değerlerini dikkat çekici bir şekilde etkilediğini göstermiştir.

Anahtar Kelimeler

CdS, maltoz, optik özellikler, kimyasal banyo depolama

Improvement of Optical Properties of CdS Thin Films by Maltose Additive for Solar Cell Applications

Öz

Nanostructured cadmium sulfide
(CdS) thin films were fabricated on glass substrates by using chemical bath
deposition (CBD) method. Different concentrations of maltose (C₁₂H₂₂O₁₁,α-D-Glukopiranozil-(1→4)-α-D-Glukopiranoz) were used as an additive in the growth solutions.
The influence of maltose on structural, morphological and optical properties of
CdS films has been investigated by using X-ray diffraction (XRD), scanning
electron microscopy (SEM) and ultraviolet-visible (UV-Vis.) analysis. The
analysis showed that the values of crystallite size of the films decreases with increasing
maltose concentration in the bath and the uniformity of the films
increases with increasing maltose concentrations. Also, both the optical band gap value
and transmission rate increases with increasing maltose concentration. These results show
that increasing maltose concentration in the growth solution remarkably
affects the surface morphology, crystal structure, band gap and
transmittance of the nanostructured CdS films.

Anahtar Kelimeler

CdS, maltose, optical properties, chemical bath deposition

Kaynakça

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