Electrochemıcal Synthesıs Of Indıum Oxıde Nanostructures And Desıgn Of Indıum Oxıde/Cadmıum Sulfıde Quantum Dot Sensıtızed Solar Cells

Abstract

The exploration for alternative energy sources in order to meet the increasing energy need in the world with the rapidly developing technology has increased the interest especially in solar cells in recent years. This study reports the synthesis of indium oxide (In2O3) based photoanodes decorated with cadmium sulfide (CdS) quantum dots to be used for the first time in the literature in quantum dot sensitized solar cells with high conversion efficiency. The X-ray photoelectron spectroscopy, X-ray powder diffraction spectroscopy, Energy dispersive X-ray spectroscopy, Scanning electron microscopy and photocurrent density measurements were used for the structural, morphological and photoelectrochemical characterization of the synthesized material. Quantum dot sensitized solar cells were designed using the characterized photoanodes and the basic quality parameters, the filling factor, and the conversion efficiency were calculated with the photocurrent density-voltage curves. As a result of the measurements, it has been determined that the designed solar cells have a filling factor of 0.324 and a conversion efficiency of 0.22%.

Keywords

• Indium oxide
• Electrochemical synthesis
• Quantum dot sensitized solar cells

İndiyum Oksit Nanoyapılarının Elektrokimyasal Sentezi Ve İndiyum Oksit/Kadmiyum Sülfür Kuantum Nokta Duyarlı Güneş Pillerinin Tasarımı

Abstract

Dünyada hızla gelişen teknoloji ile birlikte çoğalan enerji ihtiyacını karşılamak için alternatif enerji kaynaklarının araştırılması, son yıllarda özellikle güneş pillerine olan ilgiyi oldukça arttırmıştır. Bu çalışmada, literatürde ilk defa dönüşüm verimliliği yüksek kuantum nokta duyarlı güneş pilleri için kadmiyum sülfür (CdS) kuantum noktalarıyla dekore edilmiş indiyum oksit (In2O3) esaslı fotoanotların sentezi gerçekleştirildi. Sentezlenen materyalin yapısal, morfolojik ve fotoelektrokimyasal karakterizasyonlarında X-ışını fotoelektron spektroskopisi, X-ışını difraktometresi, Enerji dağılımlı X-ışını spektroskopisi, Taramalı elektron mikroskopi teknikleri ve fotoakım yoğunluğu ölçümleri kullanıldı. Karakterize edilen fotoanotlar kullanılarak kuantum nokta duyarlı güneş pilleri tasarlandı ve temel kalite parametreleri olan dolum faktörü ile dönüşüm verimliliği fotoakım yoğunluğu-voltaj eğrileriyle hesaplandı. Ölçümler sonucunda tasarlanan güneş pillerinin 0.324’lük bir dolum faktörüne ve %0.22’lik bir dönüşüm verimliliğine sahip olduğu belirlendi.

Keywords

• Indiyum oksit
• Elektrokimyasal sentez
• Kuantum nokta duyarlı güneş pilleri

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