Efficiency boosting in Sb2(S,Se)3 solar cells enabled by tailoring bandgap gradient via a hybrid growth method

Wang, Yazi; Ji, Seunghwan; Moon, Choongman; Chu, Jinwoo; Jung, Hee Joon; Shin, Byungha

doi:10.1039/d3ta05489f

Cited by 3 publications

(2 citation statements)

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“…The additional electric field promoted carrier transport and boosted J SC and FF. 17,48 In addition, the lower defect concentration at the surface, which was confirmed by electrical characterization, reduced the recombination loss and helped to enhanced V OC and the FF. 24 As a result, a PCE of 7.73% was achieved with Sb 2 (S,Se) 3 -0.24.…”

Section: T H Imentioning

confidence: 81%

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb₂(S,Se)₃

Lim,

Park,

Wang

et al. 2024

J. Phys. Chem. Lett.

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Section: T H Imentioning

confidence: 81%

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb₂(S,Se)₃

Lim,

Park,

Wang

et al. 2024

J. Phys. Chem. Lett.

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“…Since carrier recombination is significantly reduced in PED-grown Sb 2 Se 3 , while RFMS enhances the alignment of ribbons and minimizes the photocurrent barrier, we deposited Sb 2 Se 3 bilayers sequentially using both PED and RFMS techniques. This hybrid approach was effectively investigated in a recent literature study [35], in which two other techniques were utilized to fabricate graded Sb 2 (Se,S) 3 multilayers, taking advantage of the distinct properties of each technique. Our hypothesis suggests that optimizing the electrical parameters (V OC and FF in the PED layer, J SC in the RFMS layer) in the PED-RFMS bilayers can enhance the overall efficacy of the solar cell.…”

Section: Fabrication Of Bi-layered Ped/sputtering Sb 2 Se 3 Solar Cellsmentioning

confidence: 99%

Cu-Doped Sb2Se3 Thin-Film Solar Cells Based on Hybrid Pulsed Electron Deposition/Radio Frequency Magnetron Sputtering Growth Techniques

Jakomin,

Rampino,

Spaggiari

et al. 2024

Solar

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In recent years, research attention has increasingly focused on thin-film photovoltaics utilizing Sb2Se3 as an ideal absorber layer. This compound is favored due to its abundance, non-toxic nature, long-term stability, and the potential to employ various cost-effective and scalable vapor deposition (PVD) routes. On the other hand, improving passivation, surface treatment and p-type carrier concentration is essential for developing high-performance and commercially viable Sb2Se3 solar cells. In this study, Cu-doped Sb2Se3 solar devices were fabricated using two distinct PVD techniques, pulsed electron deposition (PED) and radio frequency magnetron sputtering (RFMS). Furthermore, 5%Cu:Sb2Se3 films grown via PED exhibited high open-circuit voltages (VOC) of around 400 mV but very low short-circuit current densities (JSC). Conversely, RFMS-grown Sb2Se3 films resulted in low VOC values of around 300 mV and higher JSC. To enhance the photocurrent, we employed strategies involving a thin NaF layer to introduce controlled local doping at the back interface and a bilayer p-doped region grown sequentially using PED and RFMS. The optimized Sb2Se3 bilayer solar cell achieved a maximum efficiency of 5.25%.

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Additive‐Assisted Hydrothermal Growth Enabling Defect Passivation and Void Remedy in Antimony Selenosulfide Solar Cells

Ji,

Wang,

Hwang

et al. 2024

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Antimony selenosulfide (Sb2(S,Se)3) has recently emerged as a promising light‐absorbing material, attributed to its tunable photovoltaic properties, low toxicity, and robust environmental stability. However, despite these advantages, the current record efficiency for Sb2(S,Se)3 solar cells significantly lags behind their Shockley–Queisser limit, especially when compared to other well‐established chalcogenide‐based thin‐film solar cells, such as CdTe and Cu(In,Ga)Se2. This underperformance primarily arises from the formation of unfavorable defects, predominately located at deep energy levels, which act as recombination centers, thereby limiting the potential for performance enhancement in Sb2(S,Se)3 solar cells. Specifically, deep‐level defects, such as sulfur vacancy (VS), have a lower formation energy, leading to severe non‐radiative recombination and compromising device performance. To address this challenge, thioacetamide (TA), a sulfur‐containing additive is introduced, into the precursor solution for the hydrothermal deposition of Sb2(S,Se)3. This results indicate that the incorporation of TA helps in passivating deep‐level defects such as sulfur vacancies and in suppressing the formation of large voids within the Sb2(S,Se)3 absorber. Consequently, Sb2(S,Se)3 solar cells, with reduced carrier recombination and improved film quality, achieved a power conversion efficiency of 9.04%, with notable improvements in open‐circuit voltage and fill factor. This work provides deeper insights into the passivation of deep‐level donor‐like VS defects through the incorporation of a sulfur‐containing additive, highlighting pathways to enhance the photovoltaic performance of Sb2(S,Se)3 solar cells.

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Efficiency boosting in Sb₂(S,Se)₃ solar cells enabled by tailoring bandgap gradient via a hybrid growth method

Abstract: Antimony selenosulfide (Sb2(S,Se)3) solar technology has garnered widespread interest in recent years due to its exceptional photovoltaic properties and excellent stability. The hydrothermal deposition method has enabled cell efficiencies of...

Cited by 3 publications

References 46 publications

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb₂(S,Se)₃

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb₂(S,Se)₃

Cu-Doped Sb2Se3 Thin-Film Solar Cells Based on Hybrid Pulsed Electron Deposition/Radio Frequency Magnetron Sputtering Growth Techniques

Additive‐Assisted Hydrothermal Growth Enabling Defect Passivation and Void Remedy in Antimony Selenosulfide Solar Cells

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Efficiency boosting in Sb2(S,Se)3 solar cells enabled by tailoring bandgap gradient via a hybrid growth method

Abstract: Antimony selenosulfide (Sb2(S,Se)3) solar technology has garnered widespread interest in recent years due to its exceptional photovoltaic properties and excellent stability. The hydrothermal deposition method has enabled cell efficiencies of...

Cited by 3 publications

References 46 publications

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb2(S,Se)3

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb2(S,Se)3

Cu-Doped Sb2Se3 Thin-Film Solar Cells Based on Hybrid Pulsed Electron Deposition/Radio Frequency Magnetron Sputtering Growth Techniques

Additive‐Assisted Hydrothermal Growth Enabling Defect Passivation and Void Remedy in Antimony Selenosulfide Solar Cells

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Product

Resources

About

Efficiency boosting in Sb₂(S,Se)₃ solar cells enabled by tailoring bandgap gradient via a hybrid growth method

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb₂(S,Se)₃

Tailored Band Alignment for Improved Carrier Transport in Composition-Controlled Sb₂(S,Se)₃