Bakır Katkılı $TiO_2$ Fotoanotların Boya Duyarlı Güneş Pilleri Performansı Üzerindeki Etkisi

Bu çalışmada, farklı oranlarda (Cu) katkılı $TiO_2$ nanoparçacıkları hazırlanmış ve hazırlanan bu nanoparçacıklar boya duyarlı güneşpilleri (BDGP)’nde yarıiletken fotoanot olarak kullanılmıştır. Katkısı yapılan farklı oranlarda ki Cu iyonlarının $TiO_2$ fotoanotlarıüzerindeki etkisini analiz etmek amacıyla X-ışını difraktometresi (XRD), taramalı elektron mikroskobu (SEM) ve UV-visspektrofotometre analizleri kullanılmıştır. Ayrıca yapılan Cu katkısının BDGP performansı üzerindeki etkisini belirlemek için akımgerilim analiz sistemleri kullanılmıştır. Yapılan XRD ve SEM analizlerinde Cu iyonlarının $TiO_2$ yapısına yerleştiği anlaşılmıştır. Eldeedilen fotovoltaik sonuçlara göre ise, saf TiO2 BDGP ile karşılaştırıldığında ideal katkı oranının % 1’lik Cu katkı oranı olduğu ve bukatkı oranı ile akım yoğunluğunun 10.83 mA.$cm^{-2}$ değerinden 13.36 mA.cm-2 değerine yükseldiği, pillerin güç dönüşüm veriminin ise% 4.59 değerinden % 5.26 değerine ulaştığı saptanmıştır. Üretilen BDGP’inde akım yoğunluğunda ki kayda değer bu artış ideal Cuoranının katkısı ve Cu katkılı fotoanodun boyayı tutma kabiliyetini arttırması ile ilgilidir. Elde edilen bu sonuçlar BDGP’nde Cuiyonlarının ideal katkısı, üretilen pillerin verim değerini arttırma konusunda etkili bir yöntem olduğunu göstermektedir.

The Effect of Copper Doped $TiO_2$ Photoanodes on Dye Sensitized Solar Cells Performance

In this study, Cu doped $TiO_2$ nanoparticles with different ratios are produced and are employed as semiconductor materials of photoanode to improve the photovoltaic performance of dye sensitized solar cells (DSSCs). X-ray difractometer (XRD), scanning electron microscope (SEM), and UV-vis spektrofotometre analiysis are used to characterize the influence of copper dopant with different concentrations on the $TiO_2$ photoanodes. Also, the effect of dopant on photovoltaic performance of DSSCs were analyzed by current-voltage analysis systems. XRD and SEM analysis revealed that Cu ions settled in $TiO_2$ structure. According to obtained photovoltaic results, the ideal Cu concentration of 1.0 at.%, the current density rised from 10.83 to 13.36 mA.$cm^{-2}$ , power conversion efficiencies increased from 4.59% up to 5.26% as compared to the bare DSSC. The significantly enhanced current density of the produced DSSCs was found to be related to the ideal Cu dopant amount and dye hold ability in Cu doped $TiO_2$ photoanode. These results showed that the doping of ideal copper ratio in DSSCs an effective way to increase in the conversion efficiency of DSSCs.

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