Composition engineering of Sb2S3 film enabling high performance solar cells

Yin, Yiwei; Wu, Chunyan; Tang, Rongfeng; Jiang, Chenhui; Jiang, Guoshun; Liu, Weifeng; Chen, Tao; Zhu, Chen

doi:10.1016/j.scib.2018.12.013

Cited by 46 publications

(29 citation statements)

References 25 publications

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“…However, the optimized S-rich Sb 2 S 3 film-based device generates a PCE of 6.2% ( V OC of 0.72 V, J SC of 15.9 mA cm −2 , and FF 54.3%) with a net increase by 1.2% compared to the Sb-rich Sb 2 S 3 -based device. This PCE represents the highest value in thermal evaporation-derived Sb 2 S 3 solar cells 17 , 18 . The statistical parameters ( V OC , J SC , FF , and PCE) of each type of devices show narrow distributions (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 85%

Revealing composition and structure dependent deep-level defect in antimony trisulfide photovoltaics

et al. 2021

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Antimony trisulfide (Sb2S3) is a kind of emerging light-harvesting material with excellent stability and abundant elemental storage. Due to the quasi-one-dimensional symmetry, theoretical investigations have pointed out that there exist complicated defect properties. However, there is no experimental verification on the defect property. Here, we conduct optical deep-level transient spectroscopy to investigate defect properties in Sb2S3 and show that there are maximum three kinds of deep-level defects observed, depending on the composition of Sb2S3. We also find that the Sb-interstitial (Sbi) defect does not show critical influence on the carrier lifetime, indicating the high tolerance of the one-dimensional crystal structure where the space of (Sb4S6)n ribbons is able to accommodate impurities to certain extent. This study provides basic understanding on the defect properties of quasi-one-dimensional materials and a guidance for the efficiency improvement of Sb2S3 solar cells.

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Section: Resultsmentioning

confidence: 85%

Revealing composition and structure dependent deep-level defect in antimony trisulfide photovoltaics

et al. 2021

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“…Antimony sulfide (Sb 2 S 3 ) has acknowledged inclusive courtesy in photovoltaic applications for its appropriate bandgap of 1.7 eV, high absorption coefficient (>10 5 cm À1 ), low cost, and outstanding stability. [1,2] Binary nature along with nontoxic and abundant availability turns it up next to traditional CdTe and CIGS thin-film solar cells. [3] Meanwhile, crystallinity and proper orientation are indispensable for 1D Sb 2 S 3 films for efficient charge carrier transport.…”

Section: Introductionmentioning

confidence: 99%

High Open‐Circuit Voltage in Full‐Inorganic Sb₂S₃ Solar Cell via Modified Zn‐Doped TiO₂ Electron Transport Layer

et al. 2020

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Antimony sulfide (Sb2S3) is emerging as a popular photovoltaic candidate for thin‐film solar cells due to its large absorption coefficient, suitable bandgap, nontoxic, and earth‐abundant nature. The performance of thermally evaporated Sb2S3 devices is severely restricted by interfacial recombination leading to high open‐circuit voltage (VOC) losses. CdS as electron transport layer (ETL) has overcome this problem, but triggered lower JSC issues due to parasitic absorption loss conceding to its smaller bandgap. Herein, a spray pyrolysis method is adopted for the deposition of a uniform and compact Zn‐doped TiO2 film with tuned energy levels to facilitate charge extraction and transport. The solar cell fabricated with a modified TiO2 ETL holds superior interface quality, high build‐in potential, and suppressed recombination losses, therefore pronouncedly improves the VOC. As a result, the efficiency of the device is boosted from 4.41% to 5.16%, a record VOC of 702 mV for Cd‐free full‐inorganic Sb2S3 solar cell is achieved. These findings are expected to be implemented in other Sb‐chalcogenide solar cells to further enhance the device performance.

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“…[8] Later with surface defect engineering for a mesoporous device structure, the CBDbased device performance was enhanced to 7.5%. [9] Subsequently, many fabrication methods such as spin-coating, [10] atomic layer deposition, [11] hydrothermal, [12] thermal evaporation, and aerosol-assisted chemical vapor deposition [13,14] were established. However, most solution-processed Sb 2 S 3 contained some impurities and poor crystallization, which made post-treatments and hole transport materials indispensable.…”

Section: Introductionmentioning

confidence: 99%

Efficient Copper‐Doped Antimony Sulfide Thin‐Film Solar Cells via Coevaporation Method

et al. 2019

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Sb 2 S 3 being a light-absorbing material is used for photovoltaic (PV) application due to its superior stability and progressive power conversion efficiency (PCE) benefiting from its low cost, less toxic, earth-abundant, and facile nature. Due to the difficulty in efficient doping for such 1D structure, the performance of as-fabricated thin-film solar cells is limited by high resistivity and hole extraction barrier. Herein, a coevaporation scheme is introduced for copper-doped Sb 2 S 3 by rapid thermal evaporation (RTE). The Cu-doped Sb 2 S 3 thin film discloses the enhanced crystallinity with a grain diameter greater than 1 μm and conductivity along with improved carrier concentration. At the same time, the deep valance band obtains a minor upshift, favoring the hole extraction at back contact. Consequently, all the PV parameters are enhanced leading to the PCE boosting from 4.18% to 4.61%. Herein, a facile doping technique is demonstrated to improve its performance without any modification of the present RTE method.

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Composition engineering of Sb2S3 film enabling high performance solar cells

Cited by 46 publications

References 25 publications

Revealing composition and structure dependent deep-level defect in antimony trisulfide photovoltaics

Revealing composition and structure dependent deep-level defect in antimony trisulfide photovoltaics

High Open‐Circuit Voltage in Full‐Inorganic Sb₂S₃ Solar Cell via Modified Zn‐Doped TiO₂ Electron Transport Layer

Efficient Copper‐Doped Antimony Sulfide Thin‐Film Solar Cells via Coevaporation Method

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Composition engineering of Sb2S3 film enabling high performance solar cells

Cited by 46 publications

References 25 publications

Revealing composition and structure dependent deep-level defect in antimony trisulfide photovoltaics

Revealing composition and structure dependent deep-level defect in antimony trisulfide photovoltaics

High Open‐Circuit Voltage in Full‐Inorganic Sb2S3 Solar Cell via Modified Zn‐Doped TiO2 Electron Transport Layer

Efficient Copper‐Doped Antimony Sulfide Thin‐Film Solar Cells via Coevaporation Method

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High Open‐Circuit Voltage in Full‐Inorganic Sb₂S₃ Solar Cell via Modified Zn‐Doped TiO₂ Electron Transport Layer