Zn<i>x</i>Cd1−<i>x</i>S films for use in heterojunction solar cells

Burton, L. C.; Hench, T. L.

doi:10.1063/1.89162

Cited by 115 publications

(31 citation statements)

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“…ZnS and CdS nanowires are of particular interest because these wide band gap semiconducting materials are promising candidates for various applications, such as, solar cell [53][54][55], sensors [56,57], photodetectors [58], and electronic devices. We show that the Young's modulus of wurtzite ZnS nanowires can be tuned significantly by introducing a thin layer of CdS shell on the surface of the ZnS nanowire.…”

Section: Introductionmentioning

confidence: 99%

Tunable mechanical and thermal properties of ZnS/CdS core/shell nanowires

2015

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Using all atom molecular dynamics (MD) simulations, we have studied the mechanical properties of ZnS/CdS core/shell nanowires. Our results show that the coating of a few atomic layer CdS shell on the ZnS nanowire leads to a significant change in the stiffness of the core/shell nanowires compared to the stiffness of pure ZnS nanowires. The binding energy between the core and shell region decreases due to the lattice mismatch at the core-shell interface. This reduction in binding energy plays an important role in determining the stiffness of a core/shell nanowire. We have also investigated the effects of the shell on the thermal conductivity and melting behavior of the nanowires.

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Section: Introductionmentioning

confidence: 99%

Tunable mechanical and thermal properties of ZnS/CdS core/shell nanowires

2015

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“…Therefore, the range of very low Zn contents below 5% has not been studied to date. An investigation of this small range of compositions increased in importance because, as reported by Burton et al 9 and Reddy et al 10 , a higher Zn concentration leads to a large lattice mismatch with CIGSabsorber material and a higher resistivity material, which increases the series resistance of thin-film solar cell devices. The lattice mismatch between window and absorbent layers is important to considerer in heterojunction solar cell device manufacture.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Study of Growth Mechanism and Properties of Low Zn Content Cd1-xZnxS Thin Films by Chemical Bath

et al. 2016

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Cd 1-x Zn x S thin films have been studied extensively as window layers for solar cell applications. However, a mismatch between the Cd 1-x Zn x S and copper-indium-gallium-selenide absorber layers increases with Zn film concentration, which reduces the device efficiency. In this work, Cd 1-x Zn x S thin films with low Zn concentrations were analyzed. The effect of the addition of different molar Zn concentrations to the reaction mixture on the growth mechanism of Cd 1-x Zn x S thin films and the influence of these mechanisms on structural, optical and morphological properties of the films has been studied. Cd 1-x Zn x S thin films were synthesized by chemical bath deposition using an ammonia-free alkaline solution. Microstructural analysis by X-ray diffraction showed that all deposited films grew with hexagonal structure and crystallite sizes decreased as the Zn concentration in the film increased. Optical measurements indicated a high optical transmission between 75% and 90% for wavelengths above the absorption edge. Band gap value increased from 2.48 eV to 2.62 eV, and the refractive index values for Cd 1-x Zn x S thin films decreased as the Zn increased. These changes in films and properties are related to a modification in growth mechanism of the Cd 1-x Zn x S thin films, with the influence of Zn(OH) 2 formation being more important as Zn in solution increases.

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“…Various thin-film deposition technique like vacuum evaporation, spray pyrolysis, dip technique, electrodeposition, chemical bath deposition (CBD), SILAR has been used to synthesize CdZnS thin films [7][8][9][10][11]. Among these deposition techniques, CBD is widely accepted as the preferable method to synthesize CdZnS thin film.…”

Section: Introductionmentioning

confidence: 99%