Öncül Madde Molaritesine Bağlı Hidrotermal Olarak Biriktirilmiş Antimon Sülfür İnce Filmlerin Morfolojik, Yapısal ve Optik Özellikleri

Öz

Antimon sülfür (Sb₂S₃), inorganik yarı iletken fotovoltaikler için absorbe edici malzeme olarak büyük umut vaat etmektedir. Ancak, son zamanlardaki ilerlemelere rağmen, Sb₂S₃ güneş hücrelerinin elde edilen verimlilikleri teorik potansiyellerinin önemli ölçüde altında kalmaktadır. Sb₂S₃ filmlerinin morfolojik, optik ve yapısal özelliklerinin optimize edilmesi, tam potansiyellerine ulaşılması için çok önemlidir. Bu araştırmada, çeşitli antimon potasyum tartarat (C₈H₄K₂O₁₂Sb₂•H₂O) ve sodyum tiyosülfat pentahidrat (Na₂S₂O₃•5H₂O) konsantrasyonları ile indiyum kalay oksit (ITO) kaplı cam alt tabakalar üzerinde yüksek kaliteli Sb₂S₃ ince filmler biriktirmek için hidrotermal biriktirme tekniği kullanılmıştır. X-ışını kırınımı (XRD), taramalı elektron mikroskobu (SEM) ve UV-görünür spektroskopisi ile elde edilen filmlerin yapısal, morfolojik ve optik özellikleri incelenmiştir. Karakterizasyon sonuçları, reaktanların konsantrasyonları ile elde edilen film özellikleri arasında güçlü bir korelasyon olduğunu ortaya koymuştur. Öncül çözeltisindeki Sb ve S kaynaklarının kontrollü molariteleri, verimli fotovoltaikler için çok önem taşıyan uygun bant aralığına, kompakt yüzeye ve (hk1) tercihli yönelimine sahip Sb₂S₃ filmlerinin üretilmesini sağlamıştır.

Anahtar Kelimeler

• Antimon Sülfür
• Hidrotermal Biriktirme
• İnce Film Güneş Hücreleri

Precursor Molarity Dependent Morphological, Structural and Optical Properties of Hydrothermally Deposited Antimony Sulfide Thin Films

Abstract

Antimony sulfide (Sb2S3) holds great promise as an absorber material for inorganic semiconductor photovoltaics. However, despite recent progress, the achieved efficiencies of Sb2S3 solar cells remain substantially below their theoretical potential. Optimizing the morphological, optical, and structural properties of Sb2S3 films is crucial for realizing its full potential. This research utilized hydrothermal deposition technique to deposit high-quality Sb2S3 thin films on indium tin oxide (ITO) coated glass substrates with varying antimony potassium tartrate (C8H4K2O12Sb2•xH2O) and sodium thiosulfate pentahydrate (Na2S2O3•5H2O) concentrations. The films were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-visible spectroscopy to evaluate their structural, morphological, and optical properties. Characterization results revealed a strong correlation between the concentrations of the reactants and the resulting film characteristics. Notably, controlled molarities of Sb and S sources in the precursor solution yielded Sb2S3 films with suitable band gap, compact surface, and (hk1) preferred orientation, all vital for efficient photovoltaics.

Keywords

• Antimony Sulfide
• Hydrothermal Deposition
• Thin Film Solar Cells

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