Effect of CdS Thickness on the Optical and Structural Properties of TiO&lt;sub&gt;2&lt;/sub&gt;/CdS Nanocomposite Film

Mohsin, Ali Kamel; Bidin, Noriah

doi:10.4028/www.scientific.net/amr.1107.547

Cited by 5 publications

(4 citation statements)

References 14 publications

(13 reference statements)

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“…Significantly, an increase in the steepness of the absorption edge and a shift of the absorption edge towards shorter wavelength were observed with increase in CdS thickness. This observation is documented in the literature [18], [19] with researchers such as Bosio et al, 2006 [7], Han et al, 2011 [20] suggesting superior semiconductor material quality with steeper absorption edge.…”

Section: Experimental Techniques Usedmentioning

confidence: 67%

Effect of thickness: a case study of electrodeposited CdS in CdS/CdTe based photovoltaic devices

Ojo

Salim

Olusola

et al. 2016

J Mater Sci: Mater Electron

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The effect of electrodeposition technique on CdS thickness incorporated in CdS/CdTe-based solar cell has been investigated using all-electrodeposited g/FTO/n-CdS/n-CdTe/p-CdTe multilayer device configuration. The optical, morphological and structural properties of the electroplated CdS were investigated for CdS thicknesses between 50nm and 200 nm. The observed CdS bandgap ranges between 2.42 and 2.46 eV. The morphological analysis shows full coverage of underlying g/FTO substrate for all CdS thicknesses except for the 50 nm which shows the presence of gap in-between grains. The structural analysis shows a preferred orientation of H(101) for all the CdS thicknesses except the 50 nm thick CdS which shows either a weak crystallinity or an amorphous nature. The fabricated solar cell shows a maximum conversion efficiency of ~11% using CdS thickness ranging between 100 and 150 nm. These results show that although low CdS thickness is desirable for photovoltaic application, the effect of nucleation mechanism of deposition technique should be taken into consideration.

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Section: Experimental Techniques Usedmentioning

confidence: 67%

Effect of thickness: a case study of electrodeposited CdS in CdS/CdTe based photovoltaic devices

Ojo

Salim

Olusola

et al. 2016

J Mater Sci: Mater Electron

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“…Consequently, an increase in the steepness of the absorption edge and a shift of the absorption edge towards shorter wavelength were observed with increase in CdS thickness. This observation is well documented in the literature [159,161] with researchers such as Bosio, 2006 [30] and Han, 2011 [125] suggesting superior semiconductor material quality with steeper absorption edge due to lesser impurity energy levels and defects in the thin film.…”

Section: X-ray Diffraction Study Based On Cds Thicknesssupporting

confidence: 66%

Engineering of electroplated materials for multilayer next generation graded bandgap solar cells

Ojo¹

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for their administrative and technical support during my research program. I do also acknowledge the contributions of my friends within MERI most especially Olalekan Ojedokun, Abubakar Mohammed, Oluwaseun Oluwafemi and Alireza Dastan to mention but a few. I do recognize the VC, DVCs, Dean of Engineering, HOD Mechanical Engineering and other departmental and faculty colleagues in Ekiti State University (EKSU), Ado-Ekiti, Nigeria. I am eternally grateful to my wife Moyosore Ayotunde-Ojo for standing by me through the thick and thin. Most especially for taking care of our children (Ayomide and Olamide Ayotunde-Ojo) in my absence. You are indeed a treasure of inestimable value.Appreciation also goes to my parents (Mr & Mrs A.K. Ojo) for their moral support and also to my in-laws (Mr & Mrs Ajiboye) for their encouragement. To my sweet sister Ajibola Elubeku, I say thank you for your continued support. To my late brother Adebayo Moyosore Ojo, it still feels like yesterday when you left to answer the call above. Thank you for the positive contributions you made in all our lives.

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“…It was also observed that the fundamental absorption edge of TiO 2 :CdS was shifted towards the high wavelength after incorporating CdS into TiO 2 . The pure TiO 2 film exhibited high absorption in the UV range, and it did not significantly absorb the visible light [58].…”

Section: Uv-vis Resultsmentioning

confidence: 99%

Preparation and Numerical Optimization of TiO2:CdS Thin Films in Double Perovskite Solar Cell

et al. 2023

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This work focuses on preparing TiO2, CdS, and composite TiO2:CdS thin films for photovoltaic applications by thermal evaporation. The suggested materials exhibit very good optical and electrical properties and can play a significant role in enhancing the efficiency of the device. Various microscopy and spectroscopy techniques were considered to investigate the optical, morphological, photoluminescence, and electrical properties. FTIR confirms the material identification by displaying some peaks in the fingerprint region. UV Vis spectroscopy yields high transmission (80–90%) and low absorbance (5–10%) within the spectral region from 500 nm to 800 nm for the composite thin films. The optical band gap values for CdS, TiO2, and TiO2:CdS thin films are 2.42 eV, 3.72 eV, and 3.6 eV. XRD was utilized to analyze the amorphous nature of the thin films, while optical and SEM microscopy were employed to examine the morphological changes caused by the addition of CdS to TiO2. The decrease in the bandgap of the composite thin films was determined by the Tauc plot, which is endorsed due to the band tailing effects. Photoluminescence spectroscopy depicts several emission peaks in the visible region when they are excited at different wavelengths, and the electrical measurement enhances the material conductivity. Furthermore, the proposed electron transport materials (TiO2, CdS, TiO2:CdS) were simulated with different perovskite materials to validate their design by employing the SCAPS-1D program and assess their performance in commercial implementation. The observed results suggest that TiO2:CdS is a promising candidate to be used as an ETM in PSC with enhanced productivity.

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Effect of CdS Thickness on the Optical and Structural Properties of TiO<sub>2</sub>/CdS Nanocomposite Film

Cited by 5 publications

References 14 publications

Effect of thickness: a case study of electrodeposited CdS in CdS/CdTe based photovoltaic devices

Effect of thickness: a case study of electrodeposited CdS in CdS/CdTe based photovoltaic devices

Engineering of electroplated materials for multilayer next generation graded bandgap solar cells

Preparation and Numerical Optimization of TiO2:CdS Thin Films in Double Perovskite Solar Cell

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