Fabrication of CdS/PbS and CdS:Al/PbS solar cells: Optimization of the Al content in CdS and the solution pH during PbS deposition

Rodríguez, Carlos Aníbal; Mera, Adriana C.; Pizarro-Castillo, L.; Ashfaq, Mohammad; Sandoval-Paz, M.G.; Burgos, María José Cortés; Paulraj, Mosae Selvakumar; Suárez, S.

doi:10.1016/j.mssp.2021.105839

Cited by 11 publications

(6 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4. The pure PbS film own a bandgap equal to 1.3 eV, and this result is comparable with results collected in ref [24,25] , which raised to 1.45 eV after the deposition of an silver layer on the top of PbS film.…”

Section: Resultssupporting

confidence: 90%

“…Many fabrication method have been used to deposit PbS thin films, including solid vapor deposition [10], chemical bath deposition (CBD) [11], spray coated [12] , spin-coating [13], and electrodeposition [14] silver (Ag) was used as a coating for many semiconductors like CdS thin films [15], CdSe [16], and PbS [17] to reduce the health risk and toxicity of this material, which have no undesirable effects on humans Based on our prior research into CdS/Ag hybrid thin film optical qualities, we've worked to uncover the mechanism between the Ag layer and the PbS hybrid in the current manuscript, which we're submitting for publication here. Comparing optical properties of CdS film before and after Ag layer deposition were studied, emphasizing the significant reduction in energy gap as well as an increase in absorption.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Untitled

2021

View full text Add to dashboard Cite

The chemical bath deposition approach was used to arrange PbS and PbS coated with Ag thin layer thin films. PbS film was deposited at room temperature using thiourea and lead chloride as precursors. After the PbS film had been deposited, it was immersed in Ag precursors for 60 minutes at 50 C to coat its surface. In this study, we looked at absorbance in the 400-1000 nm range. The direct and indirect bandgaps were estimated using the Tauc method and yielded values between 1.3 and 1.45 eV. It resulted in increasing in bandgaps after coating with of Ag layer.

show abstract

Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Untitled

2021

View full text Add to dashboard Cite

show abstract

“…In addition, the highest conversion efficiency of all fabricated cells is about  = 0.19% and corresponds to those composed of un-doped films, independent of the thickness of the PbS absorber layer. Now, the low FF value for all fabricated cells is about 26%, which agrees with previously reported values for cells of this junction type [3,4,6,11]. This may be related to the porosity of the films synthesized by CBD allowing impurities to diffuse into the junction, in addition to the presence of voids in their structure, which affects their electrical properties.…”

Section: Table 1 Mean Values and The Confidence Interval Of Photovolt...supporting

confidence: 90%

“…In this sense, doping with Al has been reported for chemically-deposited CdS and PbS films showing in both cases an improvement in their electrical conductivity and a modification of its bandgap energy and crystallite size [6][7][8][9]. Moreover, different optoelectronic devices have been reported recently using CBD Al-doped CdS thin films [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effect of Al-doping on the efficiency of chemically-deposited CdS/PbS thin film solar cells

Fernández-Pérez¹,

Muñoz²,

Vargas³

et al. 2021

View full text Add to dashboard Cite

Using chemical bath deposition in an ammonia-free system, CdS/PbS solar cells have been synthesized with different Al content in their composition and varying its absorber layer thickness. Nanocrystalline CdS thin-films with an average thickness of 140 nm were prepared and, subsequently, PbS thin-films with two different thicknesses (330 and 790 nm) were grown on the CdS. X-ray diffraction studies shows that CdS and PbS thin films have a hexagonal and cubic structure, respectively. The illuminated current/voltage characteristic curves of these p-n junctions were measured using a 300 W solar simulator at air mass 1.5, and a frequency of 50-60 Hz. It was found that Al doping decreases the conversion efficiency of the solar cells with the thinnest absorber layer, from 0.19 % to 0.05 %, and for those with thicker layers, from 0.19 % to 0.03 %.

show abstract

“…PbS thin films are widely used in optoelectronics and sensors as materials for IR detectors, optical switches, efficient solar radiation conversion devices, chemical sensors, temperature sensors, photodetectors that operate in the infrared wavelength range and photoresistors, temperaturesensitive sensors, detectors in the infrared range of the spectrum [1][2][3][4][5][6]. Lead sulfide, a narrow-band semiconductor, which is the basic thermoelectric materials in the temperature range of 300-950 K and this material is also a promising material in semiconductor optoelectronics for the creation of injection lasers [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Plasma Surface Treatment on the Structure of the Lead Sulfide Film

Amirbekova,

Tolepov,

Guseinov

et al. 2024

jour

View full text Add to dashboard Cite

In this work, the effect of the substrate surface on the formation of structured lead sulfide films is studied. For this purpose, the surface of single-crystalline silicon (100) was subjected to plasma treatment in a glow discharge in an argon atmosphere, at a working pressure of 1 Pa and a potential difference across the electrodes of 2 kV. Lead sulfide films were obtained on treated and untreated single-crystalline silicon surfaces by chemical deposition from an aqueous solution of lead nitrate, thiourea and sodium hydroxide at a temperature of 70°C for 30 minutes. The surface morphology, elemental composition, and crystal structure were studied by scanning electron microscopy, energy dispersive analysis, and X-ray diffraction, respectively. As a result, the films deposited on pretreated substrates have a distinctly different surface structure compared to films deposited on untreated substrates. Under the same synthesis conditions, the growth of crystals on the treated surface occurred predominantly along certain lines and were grouped into individual particles, while on the untreated surface a continuous film was formed. Thus, through plasma treatment, crystal growth can be controlled to create nanostructures.

show abstract

Fabrication of CdS/PbS and CdS:Al/PbS solar cells: Optimization of the Al content in CdS and the solution pH during PbS deposition

Cited by 11 publications

References 46 publications

Untitled

Untitled

Effect of Al-doping on the efficiency of chemically-deposited CdS/PbS thin film solar cells

The Effect of Plasma Surface Treatment on the Structure of the Lead Sulfide Film

Contact Info

Product

Resources

About