Non-toxic precursor solution route for fabrication of CZTS solar cell based on all layers solution processed

Singh, Manjeet; Jiu, Jinting; Suganuma, Katsuaki; Kim, Junho

doi:10.1016/j.jallcom.2015.05.240

Cited by 14 publications

(10 citation statements)

References 36 publications

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“…These parameters will yield a V OC loss of 90∼100 mV. The obtained V OC loss can elucidate the increased V OC value in the NWs-based solar cell in comparison to the planar one that usually has a V OC of around 500 mV434445.…”

Section: Resultsmentioning

confidence: 87%

Solution-Processed One-Dimensional ZnO@CdS Heterojunction toward Efficient Cu2ZnSnS4 Solar Cell with Inverted Structure

Chen

Fan

Liu

et al. 2016

Sci Rep

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Kesterite Cu2ZnSnS4 (CZTS) semiconductor has been demonstrated to be a promising alternative absorber in thin film solar cell in virtue of its earth-abundant, non-toxic element, suitable optical and electrical properties. Herein, a low-cost and non-toxic method that based on the thermal decomposition and reaction of metal-thiourea-oxygen sol-gel complexes to synthesize CZTS thin film was developed. The low-dimensional ZnO@CdS heterojunction nano-arrays coupling with the as-prepared CZTS thin film were employed to fabricate a novel solar cell with inverted structure. The vertically aligned nanowires (NWs) allow facilitating the charge carrier collection/separation/transfer with large interface areas. By optimizing the parameters including the annealing temperature of CZTS absorber, the thickness of CdS buffer layer and the morphology of ZnO NWs, an open-circuit voltage (VOC) as high as 589 mV was obtained by such solar cell with inverted structure. The all-solution-processed technic allows the realization of CZTS solar cell with extremely low cost.

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Section: Resultsmentioning

confidence: 87%

Solution-Processed One-Dimensional ZnO@CdS Heterojunction toward Efficient Cu2ZnSnS4 Solar Cell with Inverted Structure

Chen

Fan

Liu

et al. 2016

Sci Rep

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“…Since sputtering equipment requires huge initial investment, a sputtering‐free CZTS solar cell is much more cost‐effective than typical CZTS solar cell, realizing both competitive efficiency and low cost simultaneously, which is appreciated by commercial application . However, up to now there are just a few attempts on fabricating sputtering‐free CZTS solar cells, and their efficiency is not satisfactory …”

Section: Introductionmentioning

confidence: 99%

“…In the range of 20 nm or less, the precursor ink showed elemental inhomogeneity, which would lead to degradation of phase purity as well as inhomogeneous growth of CZTS grains that would cause high roughness of top surface of CZTS film after annealing. Secondly, the Ag‐nanowire (AgNW) top transparent electrode (TTE) has some problems in collecting electrons . The carrier mobility of intrinsic zinc oxide (i‐ZnO) is relatively low .…”

Section: Introductionmentioning

confidence: 99%

“…[8] However, up to now there are just a few attempts on fabricating sputtering-free CZTS solar cells, and their efficiency is not satisfactory. [9][10][11] There are two main problems that bottleneck the performance of previous sputtering-free CZTS solar cells. Firstly, the quality of CZTS film is lagging behind the leading edge of solution-processed CZTS films.…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, the Ag-nanowire (AgNW) top transparent electrode (TTE) has some problems in collecting electrons. [11] The carrier mobility of intrinsic zinc oxide (i-ZnO) is relatively low. [13] In a typical CZTS solar cell, this would not be a problem because the aluminum-doped zinc oxide (AZO) or indium-doped tin oxide (ITO) TTE contacts with i-ZnO layer in a surface-to-surface manner, which means electrons only transport a short distance vertically before collected by top electrode.…”

Section: Introductionmentioning

confidence: 99%

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All‐Layer Sputtering‐Free Cu2Zn1‐xCdxSnS4 Solar Cell with Efficiency Exceeding 7.5%

Yin

Han

et al. 2019

ChemistrySelect

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Cu2ZnSnS4 (CZTS) is a promising photovoltaic material drawing worldwide attention due to its remarkable photovoltaic performance and earth‐abundant element constitution, making it a good candidate for cost‐effective photovoltaic application. The power conversion efficiency (PCE) of CZTS solar cell has been increasing rapidly during last few years. Although the photovoltaic materials can be synthesized and fabricated with solution‐processed methods, the conventional CZTS solar cells still rely heavily on vacuum‐based techniques such as sputtering, evaporating or electron‐beam deposition, which however, make CZTS solar cells still costly. A few attempts on sputtering‐free CZTS solar cells have been reported, yet for now their PCEs are lagging behind the leading edges. Here, we demonstrated a 7.5% efficient sputtering‐free Cd‐alloyed CZTS solar cells by using sulfur‐free precursor recipe. This recipe is proven to modify the morphology of CZTS film, leading to enhanced crystallinity and absorber/buffer junction quality. The mechanism behind the above‐mentioned improvements is that applying S powder‐free recipe can eliminate the problem of initial elemental distribution inhomogeneity within ball‐milling processed precursor film, promoting vertically aligned grain growth to form compact and flat absorber film. Our work shows the vital importance of tuning the proportion of sulfur within solution‐processed precursor ink to achieve high‐performance of sputtering‐free CZTS solar cells.

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Copper‐Based Chalcopyrite and Kesterite Materials for Solar Hydrogen Generation

Altaf

Abdullayeva

Sankır

2018

Photoelectrochemical Solar Cells

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Non-toxic precursor solution route for fabrication of CZTS solar cell based on all layers solution processed

Cited by 14 publications

References 36 publications

Solution-Processed One-Dimensional ZnO@CdS Heterojunction toward Efficient Cu2ZnSnS4 Solar Cell with Inverted Structure

Solution-Processed One-Dimensional ZnO@CdS Heterojunction toward Efficient Cu2ZnSnS4 Solar Cell with Inverted Structure

All‐Layer Sputtering‐Free Cu2Zn1‐xCdxSnS4 Solar Cell with Efficiency Exceeding 7.5%

Copper‐Based Chalcopyrite and Kesterite Materials for Solar Hydrogen Generation

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