Improving the efficiency of a Cu2ZnSn(S,Se)4 solar cell using a non-toxic simultaneous selenization/sulfurization process

Wang, Li Ching; Lin, Yu-Min; Hsu, Hung Ru

doi:10.1016/j.mssp.2017.11.005

Cited by 11 publications

(1 citation statement)

References 29 publications

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“…Various methods for the fabrication of CZTSSe thin films have been developed, including quinary sputtering and CZTSSe nanoparticle deposition; , however, the bulk of the literature has focused on a two-step process of depositing pure CZTS or CZTSe films followed by selenization and/or sulfurization at high temperature under toxic atmospheres to form the mixed CZTSSe phase. ,− The deposition of CZTS and CZTSe films can be achieved by the decomposition of molten salts, − reactive sputtering, − electroplating, − vapor deposition, − precursor solution deposition, − and nanoparticle ink sintering. − Of these, nanoparticle routes are among the most promising because of their potential to be inexpensive and scalable, while maintaining superior phase and compositional control when compared to nonsolution-based approaches. Although CZTS nanoparticle routes, including green and scalable syntheses, have been widely reported, ,− reports related to CZTSe nanoparticles are much more scarce. − , CZTSe nanoparticle syntheses typically involve the use of toxic solvents such as hydrazine,<...…”

Section: Introductionmentioning

confidence: 99%

Aqueous Synthesis of Cu₂ZnSnSe₄ Nanocrystals

Ritchie

Chesman

Jasieniak³

et al. 2019

Chem. Mater.

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Copper zinc tin selenide (CZTSe) nanocrystal inks show promise as a candidate for developing cheap, scalable, efficient, and nontoxic photovoltaic devices. They also present an important opportunity to controllably mix copper zinc tin sulfide (CZTS) with CZTSe to produce directly spectrally tunable Cu 2 ZnSn(S/Se) 4 (CZTSSe) solid-solutions using low-temperature processes. Herein, we describe a one-pot, low-temperature, aqueous-based synthesis that employs simultaneous redox and crystal formation reactions to yield CZTSe nanocrystal inks stabilized by Sn 2 Se 7 6− and thiourea. This versatile CZTSe synthesis is understood through the use of inductively coupled plasma mass spectrometry, Raman spectroscopy, Fourier transform infrared spectroscopy, and powder X-ray diffraction. It is further shown that stoichiometrically mixed CZTSe and CZTS nanocrystal powders yield a single CZTSSe phase at annealing temperatures between 200 and 250 °C. This facile and low-temperature process offers a low-energy alternative for the deposition of pure CZTSe/SSe thin films and enables the band gap to be readily tuned from 1.5 down to 1.0 eV by simple solution chemistry.

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Section: Introductionmentioning

confidence: 99%

Aqueous Synthesis of Cu₂ZnSnSe₄ Nanocrystals

Ritchie

Chesman

Jasieniak³

et al. 2019

Chem. Mater.

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Band Gap and Defect Engineering for High‐Performance Cadmium‐free Sb₂(S,Se)₃ Solar Cells and Modules

Liu

Gao

et al. 2022

Adv Funct Materials

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High‐efficiency antimony selenosulfide (Sb2(S,Se)3) solar cells are often fabricated by hydrothermal deposition and also comprise a CdS buffer layer. Whereas the use of toxic materials such as cadmium compounds should be avoided, both of these issues hinder scaling up to large areas and market access. For this reason, co‐sublimation is studied as a manufacturing process for the active layer as well as the use of Cd‐free buffer layers. To further improve the power conversion efficiency (PCE), a graded bandgap profile is designed for the absorber layer. A V‐shaped graded bandgap in the Sb2(S,Se)3 absorber layer is produced on a TiO2 substrate by co‐sublimation of a controlled varying molar ratio of Sb2Se3 and Sb2S3. Moreover, increasing the Se/S ratio improves the grain size and favorable (hk1) orientations, reduces the detrimental bulk defects in Sb2(S,Se)3 films. Consequently, the optimized Sb2(S,Se)3 solar cells reach a PCE of 9.02%, which is a record value for Cd‐free Sb‐based solar cells. A PCE of 7.15% is further demonstrated for a Sb2(S,Se)3 monolithically interconnected minimodule with an active area of 12.32 cm2. This co‐sublimation graded bandgap technique provides a useful guidance for the optimization of a range of solar cells based on alloy compounds.

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A Review of Carrier Transport in High‐Efficiency Sb₂(S,Se)₃ Solar Cells

Zhao,

Chen,

et al. 2023

Solar RRL

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As a kind new photovoltaic material, antimony sulfide–selenide (Sb2(S,Se)3) thin films have been considered a promising low‐cost solar cell absorption layer material due to their excellent photoelectric performance and stability. Continued research and development efforts have significantly increased the power conversion efficiency of Sb2(S,Se)3 solar cells over the past few years, which now exceeds 10%. High device performance requires efficient carrier collection and transport. A deeper understanding of the carrier‐transport process can guide the optimization of solar cell designs and materials. Herein, the factors affecting carrier transport combined with the crystal structure in Sb2(S,Se)3 solar cells are discussed. Recent advances in carrier management strategies to overcome the recombination losses are also discussed, broadly categorized into two main approaches: regulation of the absorption layer and optimization of the device interface contacts. Furthermore, the possible future research directions of Sb2(S,Se)3 solar cells are prospected.

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Improving the efficiency of a Cu2ZnSn(S,Se)4 solar cell using a non-toxic simultaneous selenization/sulfurization process

Cited by 11 publications

References 29 publications

Aqueous Synthesis of Cu₂ZnSnSe₄ Nanocrystals

Aqueous Synthesis of Cu₂ZnSnSe₄ Nanocrystals

Band Gap and Defect Engineering for High‐Performance Cadmium‐free Sb₂(S,Se)₃ Solar Cells and Modules

A Review of Carrier Transport in High‐Efficiency Sb₂(S,Se)₃ Solar Cells

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Improving the efficiency of a Cu2ZnSn(S,Se)4 solar cell using a non-toxic simultaneous selenization/sulfurization process

Cited by 11 publications

References 29 publications

Aqueous Synthesis of Cu2ZnSnSe4 Nanocrystals

Aqueous Synthesis of Cu2ZnSnSe4 Nanocrystals

Band Gap and Defect Engineering for High‐Performance Cadmium‐free Sb2(S,Se)3 Solar Cells and Modules

A Review of Carrier Transport in High‐Efficiency Sb2(S,Se)3 Solar Cells

Contact Info

Product

Resources

About

Aqueous Synthesis of Cu₂ZnSnSe₄ Nanocrystals

Aqueous Synthesis of Cu₂ZnSnSe₄ Nanocrystals

Band Gap and Defect Engineering for High‐Performance Cadmium‐free Sb₂(S,Se)₃ Solar Cells and Modules

A Review of Carrier Transport in High‐Efficiency Sb₂(S,Se)₃ Solar Cells