sweta minj - Academia.edu (original) (raw)
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Ankara Sosyal Bilimler Üniversitesi / Social Sciences University of Ankara
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Papers by sweta minj
Women in Optics and Photonics in India 2022
Journal of Scientific Research of the Banaras Hindu University, 2022
In this research, the zinc mixed cadmium sulfide thin films were synthesized on the glass substra... more In this research, the zinc mixed cadmium sulfide thin films were synthesized on the glass substrate by simple and easy successive ionic layer adsorption and reaction (SILAR) process. The thin films were prepared by different mixing percentage of Zinc with cadmium sulfide. The Zn-CdS films have been characterized by X-Ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and optical properties were investigated by ultraviolet-visible spectrophotometer. X-Ray studies show the hexagonal crystal structure of CdS film. The surface morphology is found different in both annealed and unannealed structure from FESEM image. It is smooth, dense and uniform in structure in case of unannealed condition. And it is non-uniform structure when annealed. The absorbance spectra of pure CdS and Zn mixed CdS has compared and it is observed that Zn-mixed CdS have greater absorbance than pure CdS.
Journal of Ravishankar University (PART-B)
Recently, organic-inorganic perovskite-based solar cells have become a revolution in photovoltaic... more Recently, organic-inorganic perovskite-based solar cells have become a revolution in photovoltaic field due to their unique properties. Several studies were focused on perovskite solar cells based on Pb perovskite layer as lead provides strong absorption of photons and have high efficiency. However, the factor of toxicity, stability and ecological challenges of these devices is the main challenge to the progress in commercial production. In this, study and numerical modeling of perovskite solar cells using an alternative candidate which is tin as a perovskite material has been carried out. This later is investigated in order to overcome the toxicity, stability and ecological challenges effects on perovskite solar cells, as they exhibit similar photovoltaic performances as Pb-perovskite solar cells. Therefore, the effect of single and double absorbent i.e. CH3NH3SnI3 and CH3NH3SnBr3 and no Hole Transport Layer is studied and investigated to enhance the conversion efficiency of perovs...
Journal of Ravishankar University (PART-B)
Research of lead-free Perovskite based solar cells has gained speedy and growing attention with u... more Research of lead-free Perovskite based solar cells has gained speedy and growing attention with urgent intent to eliminate toxic lead in Perovskite materials. The main purpose of this work is to supplement the research progress with comparative analysis of different lead-free Perovskite based solar cells by numerical simulation method using solar cell capacitance simulator (SCAPS-1D) software. The environmental friendliness and excellent thermal stability proves Cesium Tin Iodide (CsSnI3) as one of the promising materials for the commercialization of the Perovskite solar cells. However, CsSnI3 solar cells suffer from poor efficiency due to having low open-circuit voltage, VOC attributed to poor absorber film quality as well as energy level mismatch at the interfaces between different layers like transparent front contact. The architecture of the solar cell is n-i-p device structure acts as light CsSnI3 absorber active layer, TiO2 as electron transport layer and Spiro-OMeTAD as hole ...
Women in Optics and Photonics in India 2022
Journal of Scientific Research of the Banaras Hindu University, 2022
In this research, the zinc mixed cadmium sulfide thin films were synthesized on the glass substra... more In this research, the zinc mixed cadmium sulfide thin films were synthesized on the glass substrate by simple and easy successive ionic layer adsorption and reaction (SILAR) process. The thin films were prepared by different mixing percentage of Zinc with cadmium sulfide. The Zn-CdS films have been characterized by X-Ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and optical properties were investigated by ultraviolet-visible spectrophotometer. X-Ray studies show the hexagonal crystal structure of CdS film. The surface morphology is found different in both annealed and unannealed structure from FESEM image. It is smooth, dense and uniform in structure in case of unannealed condition. And it is non-uniform structure when annealed. The absorbance spectra of pure CdS and Zn mixed CdS has compared and it is observed that Zn-mixed CdS have greater absorbance than pure CdS.
Journal of Ravishankar University (PART-B)
Recently, organic-inorganic perovskite-based solar cells have become a revolution in photovoltaic... more Recently, organic-inorganic perovskite-based solar cells have become a revolution in photovoltaic field due to their unique properties. Several studies were focused on perovskite solar cells based on Pb perovskite layer as lead provides strong absorption of photons and have high efficiency. However, the factor of toxicity, stability and ecological challenges of these devices is the main challenge to the progress in commercial production. In this, study and numerical modeling of perovskite solar cells using an alternative candidate which is tin as a perovskite material has been carried out. This later is investigated in order to overcome the toxicity, stability and ecological challenges effects on perovskite solar cells, as they exhibit similar photovoltaic performances as Pb-perovskite solar cells. Therefore, the effect of single and double absorbent i.e. CH3NH3SnI3 and CH3NH3SnBr3 and no Hole Transport Layer is studied and investigated to enhance the conversion efficiency of perovs...
Journal of Ravishankar University (PART-B)
Research of lead-free Perovskite based solar cells has gained speedy and growing attention with u... more Research of lead-free Perovskite based solar cells has gained speedy and growing attention with urgent intent to eliminate toxic lead in Perovskite materials. The main purpose of this work is to supplement the research progress with comparative analysis of different lead-free Perovskite based solar cells by numerical simulation method using solar cell capacitance simulator (SCAPS-1D) software. The environmental friendliness and excellent thermal stability proves Cesium Tin Iodide (CsSnI3) as one of the promising materials for the commercialization of the Perovskite solar cells. However, CsSnI3 solar cells suffer from poor efficiency due to having low open-circuit voltage, VOC attributed to poor absorber film quality as well as energy level mismatch at the interfaces between different layers like transparent front contact. The architecture of the solar cell is n-i-p device structure acts as light CsSnI3 absorber active layer, TiO2 as electron transport layer and Spiro-OMeTAD as hole ...