Altering NH4OH concentration in producing chemical bath deposited CdS to steadily support electrodeposited CdTe

Gajanayake, G. K. U. P.; Silva, D. S. M. De; Atapattu, H.Y.R.

doi:10.1016/j.mseb.2020.114952

Cited by 8 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CdS/CdTe thin-film solar cells were fabricated with structure of glass/SnO 2 :F(FTO)/n-CdS/p-CdTe/CuI/Au. FTO-coated substrates (Sigma-Aldrich, St. Louis, MI, USA) were cleaned as reported elsewhere [ 44 ]. Window n-CdS layer of 80 nm thickness was deposited on cleaned FTO substrates by the chemical bath deposition technique (CBD) at 90 °C as reported elsewhere [ 44 , 45 , 46 , 47 ].…”

Section: Methodsmentioning

confidence: 99%

“…FTO-coated substrates (Sigma-Aldrich, St. Louis, MI, USA) were cleaned as reported elsewhere [ 44 ]. Window n-CdS layer of 80 nm thickness was deposited on cleaned FTO substrates by the chemical bath deposition technique (CBD) at 90 °C as reported elsewhere [ 44 , 45 , 46 , 47 ]. The CBD reaction solution contains de-ionized water, cadmium acetate, ammonium acetate, and thiourea.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells

et al. 2022

View full text Add to dashboard Cite

This study focuses on fabricating efficient CdS/CdTe thin-film solar cells with thermally evaporated cuprous iodide (CuI) as hole-transporting material (HTM) by replacing Cu back contact in conventional CdS/CdTe solar cells to avoid Cu diffusion. In this study, a simple thermal evaporation method was used for the CuI deposition. The current-voltage characteristic of devices with CuI films of thickness 5 nm to 30 nm was examined under illuminations of 100 mW/cm2 (1 sun) with an Air Mass (AM) of 1.5 filter. A CdS/CdTe solar cell device with thermally evaporated CuI/Au showed power conversion efficiency (PCE) of 6.92% with JSC, VOC, and FF of 21.98 mA/cm2, 0.64 V, and 0.49 under optimized fabrication conditions. Moreover, stability studies show that fabricated CdS/CdTe thin-film solar cells with CuI hole-transporters have better stability than CdS/CdTe thin-film solar cells with Cu/Au back contacts. The significant increase in FF and, hence, PCE, and the stability of CdS/CdTe solar cells with CuI, reveals that Cu diffusion could be avoided by replacing Cu with CuI, which provides good band alignment with CdTe, as confirmed by XPS. Such an electronic band structure alignment allows smooth hole transport from CdTe to CuI, which acts as an electron reflector. Hence, CuI is a promising alternative stable hole-transporter for CdS/CdTe thin-film solar cells that increases the PCE and stability.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The capacitance was measured in a potential range from −1.1 to 0 V in the cathodic direction. The value of the flat band potential (V fb ) was determined from the x-intercept of the linear portion of the plot given by the graphical representation of the following Mott-Schottky equation [56].…”

Section: Mott-schottky Measurementsmentioning

confidence: 99%

Advancement of Physical and Photoelectrochemical Properties of Nanostructured CdS Thin Films toward Optoelectronic Applications

et al. 2023

View full text Add to dashboard Cite

CdS thin films were grown on an FTO substrate at different temperatures, employing the low-cost hydrothermal method. All the fabricated CdS thin films were studied using XRD, Raman spectroscopy, SEM, PL spectroscopy, a UV–Vis spectrophotometer, photocurrent, Electrochemical Impedance Spectroscopy (EIS), and Mott–Schottky measurements. According to the XRD results, all the CdS thin films were formed in a cubic (zinc blende) structure with a favorable (111) orientation at various temperatures. The Scherrer equation was used to determine the crystal size of the CdS thin films, which varied from 25 to 40 nm. The SEM results indicated that the morphology of thin films seems to be dense, uniform, and tightly attached to the substrates. PL measurements showed the typical green and red emission peaks of CdS films at 520 nm and 705 nm, and these are attributable to free-carrier recombination and sulfur vacancies or cadmium vacancies, respectively. The optical absorption edge of the thin films was positioned between 500 and 517 nm which related to the CdS band gap. For the fabricated thin films, the estimated Eg was found to be between 2.50 and 2.39 eV. According to the photocurrent measurements, the CdS thin films grown were n-type semiconductors. As indicated by EIS, resistivity to charge transfer (RCT) decreased with temperature, reaching its lowest level at 250 °C. Flat band potential and donor density were found to fluctuate with temperature, from 0.39 to 0.76 V and 4.41 × 1018 to 15.86 × 1018 cm−3, respectively, according to Mott–Schottky measurements. Our results indicate that CdS thin films are promising candidates for optoelectronic applications.

show abstract

Chemical Bath Deposited CdS Along with Electrodeposited and Closed Space Sublimated CdTe for Solar Cell Fabrication

Gajanayake

Lakmal

Silva

et al. 2022

Springer Proceedings in Energy

View full text Add to dashboard Cite

Altering NH4OH concentration in producing chemical bath deposited CdS to steadily support electrodeposited CdTe

Cited by 8 publications

References 26 publications

Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells

Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells

Advancement of Physical and Photoelectrochemical Properties of Nanostructured CdS Thin Films toward Optoelectronic Applications

Chemical Bath Deposited CdS Along with Electrodeposited and Closed Space Sublimated CdTe for Solar Cell Fabrication

Contact Info

Product

Resources

About