Interfacial engineering of oxygenated chemical bath–deposited CdS window layer for highly efficient Sb2Se3 thin-film solar cells

Guo, Liping; Zhang, Bruce; Li, S.; Montgomery, Angelique; Li, L.; Xing, Guozhong; Zhang, Q.; Qian, Xiaofeng; Yan, Feng

doi:10.1016/j.mtphys.2019.100125

Cited by 24 publications

(17 citation statements)

References 41 publications

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“…[74] The sputtered oxygenated CdS ETL to the interstitial sites in the vdW gap, which facilitated the formation of Sb-O-Se chain. [75]…”

Section: Composition Engineeringmentioning

confidence: 99%

“…In a similar direction, the study on the effect of CdS:O on the morphological, interface quality, electrical and optical properties as well as device performance of the Sb 2 Se 3 solar cells deposited by a low temperature solution‐processed oxygenated chemical bath deposition (CBD) method indicates that the (Sb 4 Se 6 ) n nanoribbons were normal to the substrate with increasing oxygen in the CdS:O ETL due to oxygen diffuses from oxygenated CdS ETL to the interstitial sites in the vdW gap, which facilitated the formation of Sb‐O‐Se chain. [ 75 ]…”

Section: Band Alignment Optimizationmentioning

confidence: 99%

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Boosting V_OC of antimony chalcogenide solar cells: A review on interfaces and defects

et al. 2021

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Antimony chalcogenides, including Sb 2 S 3 , Sb 2 Se 3 , and Sb 2 (S,Se) 3 , have been developed as attractive non-toxic and earth-abundant solar absorber candidates among the thin-film photovoltaic devices. Presently, a record certified power conversion efficiency of 10.5% has been demonstrated for antimony chalcogenide solar cells, which is significantly lower than that of Cu 2 (In,Ga)Se 2 (23.35%) and CdTe (22.1%) thin-film solar cells. The inferior performance in antimony chalcogenide solar cells is mainly owing to a large open-circuit voltage (V OC ) deficit resulted from the defect and interface-assisted recombination. Herein, a comprehensive review on the recent advancements interface band alignment and defect passivation are carried out. This review will provide a solid understanding on the interfaces and defects of antimony chalcogenide solar cells, which is beneficial to the research and development of such kind of solar cells.

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“…[74] The sputtered oxygenated CdS ETL to the interstitial sites in the vdW gap, which facilitated the formation of Sb-O-Se chain. [75]…”

Section: Composition Engineeringmentioning

confidence: 99%

Section: Band Alignment Optimizationmentioning

confidence: 99%

Boosting V_OC of antimony chalcogenide solar cells: A review on interfaces and defects

et al. 2021

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“…[ 28–31 ] Various oxygen passivation strategies have been applied to Sb 2 Se 3 solar cells. [ 5,12,32 ] For instance, Liu et al. introduced controlled oxygen during the Sb 2 Se 3 film growth and improved the PCE of superstrate Sb 2 Se 3 devices to over 4%.…”

Section: Introductionmentioning

confidence: 99%

Templated Growth and Passivation of Vertically Oriented Antimony Selenide Thin Films for High‐Efficiency Solar Cells in Substrate Configuration

Rijal

Awni

et al. 2021

Adv Funct Materials

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Antimony selenide (Sb2Se3) is a promising low‐cost photovoltaic material with a 1D crystal structure. The grain orientation and defect passivation play a critical role in determining the performance of polycrystalline Sb2Se3 thin‐film solar cells. Here, a seed layer is introduced on a molybdenum (Mo) substrate to template the growth of a vertically oriented, columnar Sb2Se3 absorber layer by closed space sublimation. By controlling the grain orientation and compactness of the Sb2Se3 seeds, obtain high‐quality Sb2Se3 absorber layers with passive Sb2Se3/Mo interfaces is obtained, which in turn improve the transport of photoexcited charge carriers through the absorber layer and its interfaces. Post‐deposition annealing of absorber layers in ambient air is further utilized to passivate the defects in Sb2Se3 and enhance the quality of the front heterojunction. As a result of systematic processing optimization, Sb2Se3 planar heterojunction solar cells are fabricated in substrate configuration with a champion power conversion efficiency of 8.5%.

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“…Oxygenated CdS (CdS:O) has been widely studied in the optimization of CdTe thin-film solar cells and is known to increase the optical bandgap and upshift the CBM compared to that of pure CdS, − making it an altogether more suitable heterojunction partner for poly-Se. However, realizing the necessary control of the elemental composition and the mixture of CdS, CdSO 4 , and CdSO 3 phases rather than a single CdS x O 1– x phase is usually accomplished using reactive sputtering , or by annealing the chemical bath-deposited films under a high partial pressure of oxygen at temperatures significantly above the melting temperature of elemental selenium . Recent work published by Liu et al shows a successful inversion of the device polarity of a selenium solar cell by spin-coating an organic transport layer onto the selenium photoabsorber, attaining a power conversion efficiency of PCE = 3.9% …”

Section: Resultsmentioning

confidence: 99%

Selenium Thin-Film Solar Cells with Cadmium Sulfide as a Heterojunction Partner

Nielsen

Youngman

Crovetto

et al. 2021

ACS Appl. Energy Mater.

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Elemental selenium (Se) is experiencing a renaissance as a p-type direct wide bandgap (1.95 eV) photoabsorber, appropriate for integration with lower bandgap materials in tandem photovoltaic devices. However, single-junction selenium devices are typically in the superstrate configuration with the charge-separating p–n junction located very close to the substrate. For tandem devices, the p–n junction should ideally lie near the surface of the cell to maximize photocarrier collection, implying that the n-type heterojunction partner should be deposited on top of Se. Since Se is a soft, low-melting-point material, a low-damage deposition technique should then be identified for the partner material. Here, we investigate the suitability of CdS grown by chemical bath deposition as an n-type partner for Se cells. We demonstrate the first functioning CdS/Se solar cell in the standard superstrate configuration. Although it may be possible to realize a substrate configuration, we find that the bandgap and electron affinity of CdS are not optimal for efficient carrier absorption and transport in selenium devices, suggesting that CdS is a poor partner for selenium.

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Interfacial engineering of oxygenated chemical bath–deposited CdS window layer for highly efficient Sb2Se3 thin-film solar cells

Cited by 24 publications

References 41 publications

Boosting V_OC of antimony chalcogenide solar cells: A review on interfaces and defects

Boosting V_OC of antimony chalcogenide solar cells: A review on interfaces and defects

Templated Growth and Passivation of Vertically Oriented Antimony Selenide Thin Films for High‐Efficiency Solar Cells in Substrate Configuration

Selenium Thin-Film Solar Cells with Cadmium Sulfide as a Heterojunction Partner

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Interfacial engineering of oxygenated chemical bath–deposited CdS window layer for highly efficient Sb2Se3 thin-film solar cells

Cited by 24 publications

References 41 publications

Boosting VOC of antimony chalcogenide solar cells: A review on interfaces and defects

Boosting VOC of antimony chalcogenide solar cells: A review on interfaces and defects

Templated Growth and Passivation of Vertically Oriented Antimony Selenide Thin Films for High‐Efficiency Solar Cells in Substrate Configuration

Selenium Thin-Film Solar Cells with Cadmium Sulfide as a Heterojunction Partner

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Product

Resources

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Boosting V_OC of antimony chalcogenide solar cells: A review on interfaces and defects

Boosting V_OC of antimony chalcogenide solar cells: A review on interfaces and defects