Influence of CdS films synthesized by different methods on the photovoltaic performance of CdTe/CdS thin film solar cells*

Wang, Jun; Wang, Yuquan; Liu, Cong; Sun, Meiling; Wang, Cao; Yin, Guangchao; Jia, Fuchao; Mu, Yannan; Liu, Xiaolin; Yang, Haibin

doi:10.1088/1674-1056/abad22

Cited by 2 publications

(3 citation statements)

References 33 publications

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“…A very relevant field where most of the semiconductors obtained by CBD are implemented is the photovoltaic energy field. For example, a very reported application for CdS thin films is the use as a window layer in the CdS/CdTe solar cell structure [73][74][75]. Jun Wang et al [73] reported a comparative study where different techniques were used for the CdS fabrication: magnetron sputtering, homogeneous precipitation and CBD.…”

Section: Applications Related To Cbd-grown Materials and Comparison W...mentioning

confidence: 99%

“…For example, a very reported application for CdS thin films is the use as a window layer in the CdS/CdTe solar cell structure [73][74][75]. Jun Wang et al [73] reported a comparative study where different techniques were used for the CdS fabrication: magnetron sputtering, homogeneous precipitation and CBD. The effect of change of reactants in the chemical bath and the use of thermal annealing have been also explored in terms of the CdS/CdTe solar efficiency [74,75].…”

Section: Applications Related To Cbd-grown Materials and Comparison W...mentioning

confidence: 99%

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The chemical process for materials deposition in aqueous solution: a review

Arias¹,

González-Chan

Várguez³

et al. 2022

Surface Engineering

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The material deposition in aqueous solution, also known as chemical bath deposition (CBD), is a well-established technique for the fabrication of semiconducting thin films. The success of the CBD technique is mainly based on the relatively easy implementation and operation requirements. The CBD has importantly contributed to the development of sensors, optical devices and solar cells applications. In this review, the origins and current state of the art of the CBD technique, the involved physicochemical processes, the growing mechanisms, and the analytical techniques for the estimation of optimal physicochemical conditions for the film deposition are discussed. Emphasis on authors' experience on CBD of CdS, ZnS, Zn (OH) 2 , and ZnO films are here highlighted, following methodologies for a high control of the deposited materials, such as the species distribution diagrams and the solubility curves.

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Section: Applications Related To Cbd-grown Materials and Comparison W...mentioning

confidence: 99%

Section: Applications Related To Cbd-grown Materials and Comparison W...mentioning

confidence: 99%

The chemical process for materials deposition in aqueous solution: a review

Arias¹,

González-Chan

Várguez³

et al. 2022

Surface Engineering

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“…1(a)), a hole barrier is formed in back contact due to mismatch of work function. [5,6] Many researchers have proved that copper-doped zinc telluride (ZnTe:Cu) is an ideal back contact material (Fig. 1(b)).…”

Section: Introductionmentioning

confidence: 99%

Development of ZnTe film with high copper doping efficiency for solar cells

Lin¹,

Zhao²,

Wu³

et al. 2022

Chinese Phys. B

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Since a hole barrier was formed in back contact due to mismatch of work function, the back contact material for CdTe cell has been a significant research direction. The ZnTe:Cu is an ideal back contact material, which reduces the valence band discontinuity and can be used as the electron back reflection layer to inhibit interface recombination. The conductivity of ZnTe:Cu film is improved by applying RF-coupled DC sputtering and post-deposition heat treatment. The doping efficiency is computed as the ratio of free hole density and copper concentration, which can be correlated with performance for CdTe-based solar cell. The higher doping efficiency means that more copper atoms substitute for Zn sites in ZnTe lattices and less mobilized copper atoms remain which can enter into the CdTe absorber layer. Copper atoms are suspected as dominant element for CdTe-based cell degradation. After optimizing the ZnTe:Cu films, a systematic study is carried out to incorporate ZnTe:Cu film into CdTe solar cell. The EQE spectrum is kept relatively stable over the long wavelength range without decreasing. It is proved that the conduction band barrier of device with ZnTe:Cu/Au contact material has an effect on the EQE response, which works as free electron barrier and reduces the recombination rate of free carrier. According to the dark J–V data or the light J–V data in the linear region, the current indicates that the intercept gives the diode reverse saturation current. The results of ideality factor indicate that the dominant recombination occurs in the space charge region. In addition, the space charge density and depletion width of solar cell can be estimated by C–V profiling.

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Influence of CdS films synthesized by different methods on the photovoltaic performance of CdTe/CdS thin film solar cells*

Cited by 2 publications

References 33 publications

The chemical process for materials deposition in aqueous solution: a review

The chemical process for materials deposition in aqueous solution: a review

Development of ZnTe film with high copper doping efficiency for solar cells

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