Reaction Time and Film Thickness Effects on Phase Formation and Optical Properties of Solution Processed Cu2ZnSnS4 Thin Films

Safdar, Amna; Islam, Mohammad; Akram, Muhammad Aftab; Mujahid, Mohammad; Khalid, Yasir; Shah, S. İsmat

doi:10.1007/s11665-015-1874-6

Cited by 17 publications

(6 citation statements)

References 26 publications

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“…However, the slight differences observed among the samples might be due to the different phases present in each sample. In fact, samples at TT 200 °C and TT 350 °C showed a similar band gap because a cubic CZTS phase was prevalent in both, although the wurtzite in the TT 200 °C sample favored a shift of the band gap towards a higher value [49]. The presence of multiple and spurious phases favors the increase of the optical absorption edge towards higher energy values [50] and is confirmed by the high band gap value of the sample treated at 500 °C.…”

Section: Resultsmentioning

confidence: 99%

Solution-Based Synthesis and Characterization of Cu2ZnSnS4 (CZTS) Thin Films

et al. 2019

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Cu2ZnSnS4 (CZTS) ink was synthesized from metal chloride precursors, sulfur, and oleylamine (OLA), as a ligand by a simple and low-cost hot-injection method. Thin films of CZTS were then prepared by spin coating, followed by thermal annealing. The effects of the fabrication parameters, such as ink concentration, spinning rate, and thermal treatment temperatures on the morphology and structural, optical, and electrical properties of the films were investigated. As expected, very thin films, for which the level of transmittance and band-gap values increase, can be obtained either by reducing the concentration of the inks or by increasing the rate of spinning. Moreover, the thermal treatment affects the phase formation and crystallinity of the film, as well as the electrical conductivity, which decreases at a higher temperature.

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Section: Resultsmentioning

confidence: 99%

Solution-Based Synthesis and Characterization of Cu2ZnSnS4 (CZTS) Thin Films

et al. 2019

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“…Before test, the gas pipe joint of the tank was connected to a gas pressure controller via a bufer vessel. Ten, water was replaced for hydrazine propellant due to similar liquid specifcations [18][19][20] to be flled into the liquid chamber from the liquid pipe joint.…”

Section: Diaphragm Reversal Testsmentioning

confidence: 99%

A Study of Structural Parameters Effects on Pressure Differential to Roll Titanium Diaphragm for a Spacecraft Propellant Tank

Ma¹,

Gu²,

Zhao³

et al. 2022

Advances in Materials Science and Engineering

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A range of titanium diaphragms for spacecraft propellant tanks are designed in detail, and two typical titanium diaphragms were manufactured and corresponding reversal tests were developed. A series of finite element models of the reversal process of these titanium diaphragms is developed based on the arc-length method and a finite element analysis software. With the aid of the models, this paper analyzes the characteristics of pressure drop during the whole reversal process and investigates the effects of the structural parameters on pressure differential to roll titanium diaphragm. The results show that simulated values of the critical pressure and the overturning pressure show good agreement with measured ones. In addition, the critical pressure increases with increasing thickness, decreasing bottom diameter and chamfering radius. The thickness and the bottom diameter are the main influence factors for the critical pressure. The overturning pressure increases with increasing thickness and arc radius. These effects of the bottom diameter, the chamfering radius, and arc radius become sharper with increasing thickness.

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“…A brief literature overview shows that the majority of CZTS compounds crystalize as orthorhombic with space group Pmn2

as tetragonal with space group I

2m and I

, which are related to the wurtzite or zinc blend, respectively [ 15 ]. They are known to have a direct band gap of around 1.5–1.97 eV [ 7 , 16 ], with a favorable optical absorption coefficient of about

–

[ 17 , 18 , 19 , 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Strain Effects on the Electronic and Optical Properties of Kesterite Cu2ZnGeX4 (X = S, Se): First-Principles Study

et al. 2021

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Following the chronological stages of calculations imposed by the WIEN2K code, we have performed a series of density functional theory calculations, from which we were able to study the effect of strain on the kesterite structures for two quaternary semiconductor compounds Cu2ZnGeS4 and Cu2ZnGeSe4. Remarkable changes were found in the electronic and optical properties of these two materials during the application of biaxial strain. Indeed, the band gap energy of both materials decreases from the equilibrium state, and the applied strain is more pronounced. The main optical features are also related to the applied strain. Notably, we found that the energies of the peaks present in the dielectric function spectra are slightly shifted towards low energies with strain, leading to significant refraction and extinction index responses. The obtained results can be used to reinforce the candidature of Cu2ZnGeX4(X = S, Se) in the field of photovoltaic devices.

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Reaction Time and Film Thickness Effects on Phase Formation and Optical Properties of Solution Processed Cu2ZnSnS4 Thin Films

Cited by 17 publications

References 26 publications

Solution-Based Synthesis and Characterization of Cu2ZnSnS4 (CZTS) Thin Films

Solution-Based Synthesis and Characterization of Cu2ZnSnS4 (CZTS) Thin Films

A Study of Structural Parameters Effects on Pressure Differential to Roll Titanium Diaphragm for a Spacecraft Propellant Tank

Strain Effects on the Electronic and Optical Properties of Kesterite Cu2ZnGeX4 (X = S, Se): First-Principles Study

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