Improving the efficiency of CdS/CdTe solar cells by varying the thiourea/CdCl<sub>2</sub> ratio in the CdS chemical bath

Vigil‐Galán, O.; Arias-Carbajal, A.; Mendoza-Pérez, R.; Santana, Gregório Mateus; Sastré-Hernández, J.; Alonso, J. C.; Moreno-García, E.; Contreras‐Puente, G.; Morales‐Acevedo, Arturo

doi:10.1088/0268-1242/20/8/032

Cited by 29 publications

(6 citation statements)

References 12 publications

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“…In summary, we have calculated the capacitance versus applied voltage of CdS/CdTe thin film solar cells considering Comparison is made with -measurements of a 12.4% efficient PV cell [5] and with calculated results within a model without the assumption of the ternary compound at the interface [3].…”

Section: Discussionmentioning

confidence: 99%

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C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTe
González-Cisneros¹,
Castillo-Alvarado²,
Ortíz-López³
et al. 2013
International Journal of Photoenergy
1
0
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In CdS/CdTe solar cells, chemical interdiffusion at the interface gives rise to the formation of an interlayer of the ternary compoundCdSxCdTe1-x. In this work, we evaluate the effects of this interlayer in CdS/CdTe photovoltaic cells in order to improve theoretical results describing experimentalC-V(capacitance versus voltage) characteristics. We extended our previous theoretical methodology developed on the basis of three cardinal equations (Castillo-Alvarado et al., 2010). The present results provide a better fit to experimental data obtained from CdS/CdTe solar cells grown in our laboratory by the chemical bath deposition (for CdS film) and the close-spaced vapor transport (for CdTe film) techniques.

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Section: Discussionmentioning

confidence: 99%

“…The methodology is based on three cardinal equations as discussed in the theory below. For comparison with our calculations, we used solar cells of maximum efficiency (12.4%) fabricated in our group [5].…”

Section: Introductionmentioning

confidence: 99%

C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTe
González-Cisneros¹,
Castillo-Alvarado²,
Ortíz-López³
et al. 2013
International Journal of Photoenergy
1
0
0
0
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“…This is different from the fabrication of PbS quantum dots solar cells [17] under low temperatures (<100 • C). It is well known that CdCl 2 treatment at~400 • C can significantly improve the junction quality of CdTe thin film solar cells prepared by the close space submission (CSS) method [18,19]. However, as the grain size, melting point, or surface chemical properties of CdTe NC are quite different from those of CdTe thin film prepared by vacuum technology, the optimal chemical/annealing strategy should be different.…”

Section: Nc Solar Cell Fabrication Technology Determines the Electronmentioning

confidence: 99%

Building Solar Cells from Nanocrystal Inks

Luo

Xie

et al. 2019

Applied Sciences

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The use of solution-processed photovoltaics is a low cost, low material-consuming way to harvest abundant solar energy. Organic semiconductors based on perovskite or colloidal quantum dot photovoltaics have been well developed in recent years; however, stability is still an important issue for these photovoltaic devices. By combining solution processing, chemical treatment, and sintering technology, compact and efficient CdTe nanocrystal (NC) solar cells can be fabricated with high stability by optimizing the architecture of devices. Here, we review the progress on solution-processed CdTe NC-based photovoltaics. We focus particularly on NC materials and the design of devices that provide a good p–n junction quality, a graded bandgap for extending the spectrum response, and interface engineering to decrease carrier recombination. We summarize the progress in this field and give some insight into device processing, including element doping, new hole transport material application, and the design of new devices.

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“…E-mail: nsaadaldin@yahoo.com. one of the most promising semiconductor thin film materials for producing large area solar cells at low cost [5]. Since CdTe has an ideal band gap energy of 1.45 eV and a high absorption coefficient 6  10 4 cm -1 at 0.6 m, a very thin layer of CdTe is sufficient to absorb most of the incoming sunlight [6].…”

Section: Introductionmentioning

confidence: 99%

Structural and Electrical Characterization of the CdTe/SnO2 Heterojunction for Solar Cell Application

Al-Din¹

2014

JMSE-B

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Thin film heterojuction of the type CdTe/SnO 2 was prepared by spray pyrolysis and electron beam evaporation technique, respectively. The structural and electrical properties of the CdTe/SnO 2 heterojunction are investigated by X-ray diffraction (XRD), Hall and current-voltage (I-V) measurements. The XRD spectrum of SnO 2 film is indicated that it has a rutile tetragonal structure with a preferred orientation along (110) plane. XRD pattern of CdTe thin film is shown that it has a cubic structure with a preferred orientation along (111) plane. Hall measurements demonstrate the firm p-type conductivity of the CdTe film and n-type conductivity of the SnO 2 film. The Hall mobility and carrier density were determined from the combined measurements of resistivity and Hall coefficient at room temperature. The current-voltage curve of the heterojunction demonstrates obvious rectifying diode behavior in the dark and under illumination conditions. The ideality factor of the heterojunction was determined in case of forward bias at low voltages and it was found to be 7.08. The turn-on voltage appears at about 0.6 V under forward-biased voltage, and the reverse breakdown voltage is about 1 V. It was found that the forward current of the heterojunction was 160  10 -6 A with +1 V applied bias, while the reverse leakage current was 37  10 -6 A when -1 V was applied.

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Improving the efficiency of CdS/CdTe solar cells by varying the thiourea/CdCl₂ ratio in the CdS chemical bath

Cited by 29 publications

References 12 publications

C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTe
González-Cisneros¹,
Castillo-Alvarado²,
Ortíz-López³
et al. 2013
International Journal of Photoenergy
1
0
0
0
View full text Add to dashboard Cite

C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTe
González-Cisneros¹,
Castillo-Alvarado²,
Ortíz-López³
et al. 2013
International Journal of Photoenergy
1
0
0
0
View full text Add to dashboard Cite

Building Solar Cells from Nanocrystal Inks

Structural and Electrical Characterization of the CdTe/SnO2 Heterojunction for Solar Cell Application

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Improving the efficiency of CdS/CdTe solar cells by varying the thiourea/CdCl2 ratio in the CdS chemical bath

Cited by 29 publications

References 12 publications

C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTeGonzález-Cisneros1, Castillo-Alvarado2, Ortíz-López3 et al. 2013International Journal of Photoenergy1000View full textAdd to dashboardCite

C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTeGonzález-Cisneros1, Castillo-Alvarado2, Ortíz-López3 et al. 2013International Journal of Photoenergy1000View full textAdd to dashboardCite

Building Solar Cells from Nanocrystal Inks

Structural and Electrical Characterization of the CdTe/SnO2 Heterojunction for Solar Cell Application

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Product

Resources

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Improving the efficiency of CdS/CdTe solar cells by varying the thiourea/CdCl₂ ratio in the CdS chemical bath

C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTe
González-Cisneros¹,
Castillo-Alvarado²,
Ortíz-López³
et al. 2013
International Journal of Photoenergy
1
0
0
0
View full text Add to dashboard Cite

C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTe
González-Cisneros¹,
Castillo-Alvarado²,
Ortíz-López³
et al. 2013
International Journal of Photoenergy
1
0
0
0
View full text Add to dashboard Cite