Quantum confinement and size effects in Cu 2 ZnSnS 4 thin films produced using solution processed ultrafine nanoparticles

Safdar, Amna; Islam, Mohammad; Ahmad, Iftikhar; Akram, Muhammad Aftab; Mujahid, Mohammad; Khalid, Yasir; Zhu, Yan

doi:10.1016/j.mssp.2015.09.027

Cited by 20 publications

(10 citation statements)

References 33 publications

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“…The donor density can be estimated from the slope. The obtained values of the charge carrier concentration for 67% duty cycle, 50% duty cycle, and 33% duty cycle correspondingly are 2.56x10 16 , 2.55x10 16 , and 2.55x10 16 cm -3 which closely reflect reported values in other studies [8,34,[39][40][41][42][43][44][45][46][47][48]. In addition, by the extrapolation of 1/ 2 sc C = 0, the flat band potential values of the films deposited at different duty cycles can be determined.…”

Section: Accepted Manuscriptsupporting

confidence: 86%

Pulsed current co-electrodeposition of kesterite Cu2ZnSnS4 absorber material on fluorinated tin oxide (FTO) glass substrate

Termsaithong

Munprom

Shah

et al. 2018

Surface and Coatings Technology

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The film of kesterite Cu2ZnSnS4 (CZTS) was prepared on a fluorinated tin oxide (FTO) substrate by a galvanostatically pulsed electrodeposition. The effect of duty cycles on electrodeposition was investigated at 33%, 50%, and 67% duty cycle. For the characterization, the prepared films were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), x-ray spectroscopy (XRD), UV-vis spectroscopy, Raman spectroscopy, and an atomic emission elemental analyzer. According to the experiments, surface morphologies of the CZT precursor appear to be uniform with fewer pores. After sulfurization, the morphologies of CZTS film become more uniform. When considering duty cycles, a higher duty cycle resulted in the surface being denser, more compact, more uniform, and smoother. Based upon the XRD and EDS, the film's composition consists of copper, zinc, tin, and sulfur. The compound formulae is also proved to be copper zinc tin sulfide.

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Section: Accepted Manuscriptsupporting

confidence: 86%

Pulsed current co-electrodeposition of kesterite Cu2ZnSnS4 absorber material on fluorinated tin oxide (FTO) glass substrate

Termsaithong

Munprom

Shah

et al. 2018

Surface and Coatings Technology

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show abstract

“…3 a displays the XRD patterns of the CZTS film. The CZTS film is a polycrystalline film and has a kesterite structure with XRD peaks corresponding to (112), (200), (220) and (312) reflections [22, 23]. From Scherrer's formula, the average grain size of the film is around 180 nm.…”

Section: Resultsmentioning

confidence: 99%

Modification of back electrode structure by a Mo intermediate layer for flexible CZTS thin film solar cells

Long

Cheng

Yue

et al. 2018

Micro & Nano Letters

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In this work, an intermediate layer of Mo is pre-deposited on the flexible Mo foil before the deposition of Cu 2 ZnSnS 4 (CZTS) thin film to optimise the characteristics of the flexible CZTS thin film solar cell (TFSC). It is confirmed that the pre-deposition of the Mo layer leads to the improvement in the degree of the interface matching between the back electrode and the CZTS thin film which is always regarded as the main recombination centres of the carriers in the solar cell. By employing a Mo interlayer between the Mo foil and CZTS layer, the conversion efficiency of the as-fabricated (Mo foil/Mo/CZTS/CdS/i-ZnO/AZO/Ni/Al) solar cell is further increased from 1.27 to 1.46%. Meanwhile, the traditional structure (soda-lime glass/Mo/CZTS/CdS/i-ZnO/AZO/Ni/Al) CZTS TFSC acted as a matched group which is also prepared and obtained a conversion efficiency of 1.58%. This work demonstrates for the first time the effects of Mo intermediate layers in the flexible CZTS TFSCs.

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“…The obtained bandgap of MoS 2 /Cu 2 ZnSnS 4 NPs is ≈1.59 eV, which is higher than that of Cu 2 ZnSnS 4 NPs (≈1.52 eV). It is believed that the quantum confinement effect and the synergic effect of nanostructured MoS 2 contribute to the bandgap enlargement …”

Section: Resultsmentioning

confidence: 99%

Significant Enhancement of Hydrogen Production in MoS₂/Cu₂ZnSnS₄ Nanoparticles

Zhou

Lin

et al. 2018

Part & Part Syst Charact

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Hydrogen produced from water splitting is a renewable and clean energy source. Great efforts have been paid in searching for inexpensive and highly efficient photocatalysts. Here, significant enhancement of hydrogen production has been achieved by introducing ≈1 mol% of MoS2 to Cu2ZnSnS4 nanoparticles. The MoS2/Cu2ZnSnS4 nanoparticles showed a hydrogen evolution rate of ≈0.47 mmol g−1 h−1 in the presence of sacrificial agents, which is 7.8 times that of Cu2ZnSnS4 nanoparticles (0.06 mmol g−1 h−1). In addition, the MoS2/Cu2ZnSnS4 nanoparticles exhibited high stability, and only ≈3% of catalytic activity was lost after a long time irradiation (72 h). Microstructure investigation on the MoS2/Cu2ZnSnS4 nanoparticles reveals that the intimate contact between the nanostructured MoS2 and Cu2ZnSnS4 nanoparticles provides an effective one‐way expressway for photogenerated electrons transferring from the conduction band of Cu2ZnSnS4 to MoS2, thus boosting the lifetime of charge carriers, as well as reducing the recombination rate of electrons and holes.

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Quantum confinement and size effects in Cu 2 ZnSnS 4 thin films produced using solution processed ultrafine nanoparticles

Cited by 20 publications

References 33 publications

Pulsed current co-electrodeposition of kesterite Cu2ZnSnS4 absorber material on fluorinated tin oxide (FTO) glass substrate

Pulsed current co-electrodeposition of kesterite Cu2ZnSnS4 absorber material on fluorinated tin oxide (FTO) glass substrate

Modification of back electrode structure by a Mo intermediate layer for flexible CZTS thin film solar cells

Significant Enhancement of Hydrogen Production in MoS₂/Cu₂ZnSnS₄ Nanoparticles

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Quantum confinement and size effects in Cu 2 ZnSnS 4 thin films produced using solution processed ultrafine nanoparticles

Cited by 20 publications

References 33 publications

Pulsed current co-electrodeposition of kesterite Cu2ZnSnS4 absorber material on fluorinated tin oxide (FTO) glass substrate

Pulsed current co-electrodeposition of kesterite Cu2ZnSnS4 absorber material on fluorinated tin oxide (FTO) glass substrate

Modification of back electrode structure by a Mo intermediate layer for flexible CZTS thin film solar cells

Significant Enhancement of Hydrogen Production in MoS2/Cu2ZnSnS4 Nanoparticles

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Significant Enhancement of Hydrogen Production in MoS₂/Cu₂ZnSnS₄ Nanoparticles