A modeling study on utilizing SnS2 as the buffer layer of CZT(S, Se) solar cells

Haghighi, Maryam; Minbashi, Mehran; Taghavinia, Nima; Kim, Dae-Hwan; Mahdavi, Seyed Mohammad; Kordbacheh, Amirhossein Ahmadkhan

doi:10.1016/j.solener.2018.04.010

Cited by 75 publications

(21 citation statements)

References 56 publications

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“…The Mott–Schottky plot consists of the inverse square of the space-charge-layer capacitance ( C SC ) versus the bias potential. The slope of the plot represents the semiconductor donor density ( N D ), and extrapolation of intercept could be used to determine the flat band potential V fb using the familiar Mott–Schottky formula: in which N D , e , ε 0 , ε r , V fb , and V are carrier density, electron charge, vacuum permittivity, the dielectric constant of the semiconductor, flat band potential, and applied potential, respectively. T is the analysis temperature (300 K), k is the Boltzmann constant (1.38 × 10 –23 J/K), C SC is the space charge capacitance, and A stands for the film area in contact with the electrolyte.…”

Section: Resultsmentioning

confidence: 99%

High-Voltage, High-Current Electrical Switching Discharge Synthesis of ZnO Nanorods: A New Method toward Rapid and Highly Tunable Synthesis of Oxide Semiconductors in Open Air and Water for Optoelectronic Applications

Malvajerdi

Abrari

Karimi

et al. 2021

ACS Appl. Mater. Interfaces

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A novel method of oxide semiconductor nanoparticle synthesis is proposed based on high-voltage, high-current electrical switching discharge (HVHC-ESD). Through a subsecond discharge in the HVHC-ESD method, we successfully synthesized zinc oxide (ZnO) nanorods. Crystallography and optical and electrical analyses approve the high crystal-quality and outstanding optoelectronic characteristics of our synthesized ZnO. The HVHC-ESD method enables the synthesis of ZnO nanorods with ultraviolet (UV) and visible emissions. To demonstrate the effectiveness of our prepared materials, we also fabricated two UV photodetectors based on the ZnO nanorods synthesized using the subsecond HVHC-ESD method. The UV-photodetector test under dark and UV light irradiation also had a promising result with a linear ohmic current−voltage output. In addition to the HVHC-ESD method's excellent tunability for ZnO properties, this method enables the rapid synthesis of ZnO nanorods in open air and water. The results demonstrate the preparation, highlight the synthesis of fine hexagonal-shaped nanorods under a second with controlled oxygen vacancies, and point defects for a wide range of applications in less than a second.

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Section: Resultsmentioning

confidence: 99%

High-Voltage, High-Current Electrical Switching Discharge Synthesis of ZnO Nanorods: A New Method toward Rapid and Highly Tunable Synthesis of Oxide Semiconductors in Open Air and Water for Optoelectronic Applications

Malvajerdi

Abrari

Karimi

et al. 2021

ACS Appl. Mater. Interfaces

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“…The ability to fine-tune the cell volume and lattice parameters by varying the composition is noteworthy because it could be used to optimize the lattice match to other materials in a device structure. One example where this would be of value is in the recently reported use of SnS 2 in place of CdS as a buffer layer in Cu(In 1– x Ga x )Se 2 and Cu 2 ZnSn(S 1– x Se x ) 4 solar cells. , The homogenous distribution of the chalcogen ions is also noteworthy as the microscopic interfaces introduced by preferential clustering could negatively affect the electronic/thermal transport and/or act as recombination centers for electrons and holes. Furthermore, the ability to accommodate the lattice strain induced by the cation substitution suggests that these materials may be relatively defect tolerant, with further implications for doping, for example, to improve electrical properties for thermoelectric applications. , …”

Section: Resultsmentioning

confidence: 99%

Thermodynamics, Electronic Structure, and Vibrational Properties of Sn_n(S_1–xSe_x)_m Solid Solutions for Energy Applications

et al. 2019

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The tin sulfides and selenides have a range of applications spanning photovoltaics and thermoelectrics to photocatalysts and photodetectors. However, significant challenges remain to widespread use, including electrical and chemical incompatibilities between SnS and device contact materials and the environmental toxicity of selenium. Solid solutions of isostructural sulfide and selenide phases could provide scope for optimizing physical properties against sustainability requirements, but this has not been comprehensively explored. This work presents a detailed modeling study of the Pnma and rocksalt Sn(S 1−x Se x ), Sn(S 1−x Se x ) 2 , and Sn 2 (S 1-x Se x ) 3 solid solutions. All four show an energetically favorable and homogenous mixing at all compositions, but rocksalt Sn(S 1−x Se x ) and Sn 2 (S 1−x Se x ) 3 are predicted to be metastable and accessible only under certain synthesis conditions. Alloying leads to a predictable variation of the bandgap, density of states, and optical properties with composition, allowing SnS 2 to be "tuned down" to the ideal Shockley−Queisser bandgap of 1.34 eV. The impact of forming the solid solutions on the lattice dynamics is also investigated, providing insight into the enhanced performance of Sn(S 1−x Se x ) solid solutions for thermoelectric applications. These results demonstrate that alloying affords facile and precise control over the electronic, optical, and vibrational properties, allowing material performance for optoelectronic applications to be optimized alongside a variety of practical considerations.

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“…SnS 2 exhibits a high optical absorption coefficient and strong photoconductive properties in visible regions and this has given rise to increased interest due to its particular structure, suitable band gap (~2.2 eV), good chemical stability, low-cost and environmental friendliness [25]. Therefore, it has been widely used in many fields, such as lithium (sodium) ion batteries [26,27], solar cells [28,29], photocatalysis [30,31], field effect transistors [32,33], photodetectors [34,35,36], etc. Su et al [37] used chemical vapor deposition (CVD) to introduce metal seeds on the substrate to achieve high-quality SnS 2 thin film for location-selective synthesis, and the response time and quantum efficiency of the fabricated photodetector was ~5 microseconds and 11.3%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Hybrid Composites of SnS2 Nanosheets Array Film with Graphene for Enhanced Photoelectric Performance

Fang

Yao

et al. 2019

Nanomaterials

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Two-dimensional (2D) metal dichalcogenides have attracted considerable attention for use in photoelectric devices due to their unique layer structure and strong light-matter interaction. In this paper, vertically grown SnS2 nanosheets array film was synthesized by a facile chemical bath deposition (CBD). The effects of deposition time and annealing temperature on the quality of SnS2 films was investigated in detail. By optimizing the preparation conditions, the SnS2 array film exhibited efficient photoelectric detection performance under sunlight. Furthermore, in order to improve the performance of the photodetector based on SnS2 nanosheets film, a transparent graphene film was introduced as the hole-transport layer by wet-chemical method directly transferring techniques. Graphene/SnS2 nanosheets array film heterojunction photodetectors exhibit enhanced photoresponsivity. The light on/off ratio of the photodetector based on graphene/SnS2 was 1.53, about 1.4 times higher than that of the pristine SnS2 array films. The improved photoresponse performance suggested that the effective heterojunction between vertical SnS2 nanosheets array film and graphene suppresses the recombination of photogenerated carriers. The results indicate that the graphene/SnS2 heterojunction photodetectors have great potential in photodetection devices.

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A modeling study on utilizing SnS2 as the buffer layer of CZT(S, Se) solar cells

Cited by 75 publications

References 56 publications

High-Voltage, High-Current Electrical Switching Discharge Synthesis of ZnO Nanorods: A New Method toward Rapid and Highly Tunable Synthesis of Oxide Semiconductors in Open Air and Water for Optoelectronic Applications

High-Voltage, High-Current Electrical Switching Discharge Synthesis of ZnO Nanorods: A New Method toward Rapid and Highly Tunable Synthesis of Oxide Semiconductors in Open Air and Water for Optoelectronic Applications

Thermodynamics, Electronic Structure, and Vibrational Properties of Sn_n(S_1–xSe_x)_m Solid Solutions for Energy Applications

Two-Dimensional Hybrid Composites of SnS2 Nanosheets Array Film with Graphene for Enhanced Photoelectric Performance

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A modeling study on utilizing SnS2 as the buffer layer of CZT(S, Se) solar cells

Cited by 75 publications

References 56 publications

High-Voltage, High-Current Electrical Switching Discharge Synthesis of ZnO Nanorods: A New Method toward Rapid and Highly Tunable Synthesis of Oxide Semiconductors in Open Air and Water for Optoelectronic Applications

High-Voltage, High-Current Electrical Switching Discharge Synthesis of ZnO Nanorods: A New Method toward Rapid and Highly Tunable Synthesis of Oxide Semiconductors in Open Air and Water for Optoelectronic Applications

Thermodynamics, Electronic Structure, and Vibrational Properties of Snn(S1–xSex)m Solid Solutions for Energy Applications

Two-Dimensional Hybrid Composites of SnS2 Nanosheets Array Film with Graphene for Enhanced Photoelectric Performance

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Thermodynamics, Electronic Structure, and Vibrational Properties of Sn_n(S_1–xSe_x)_m Solid Solutions for Energy Applications