Selenization of Sb2Se3 absorber layer: An efficient step to improve device performance of CdS/Sb2Se3 solar cells

Leng, Meiying; Luo, Miao; Chen, Chao; Qin, Sikai; Chen, Jie; Zhong, Jie; Tang, Jiang

doi:10.1063/1.4894170

Cited by 161 publications

(111 citation statements)

References 23 publications

Supporting

Mentioning

106

Contrasting

Unclassified

Order By: Relevance

“…Device efficiency (Fig. 5d) increased about 0.3 power points (from 5.32% to 5.66%) when stored in air ambient for up to 45 days without encapsulation, in good agreement with our previous report of thermally evaporated Sb2Se3 solar cells 19,29 . Damp-heat testing (85℃ and 85% humidity, no encapsulation) of the same device showed a slightly reduced device performance, from an initial 5.67% efficiency to 5.39% after 10 h testing and to 5.16% after 100 h testing.…”

supporting

confidence: 78%

Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

et al. 2015

Self Cite

View full text Add to dashboard Cite

supporting

confidence: 78%

Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

et al. 2015

Self Cite

View full text Add to dashboard Cite

“…Within one year, solution processed Sb 2 Se 3 sensitized solar cells fabricated using a single-source precursor have obtained a power-conversion efficiency (PCE) of 3.21% by Seok’s group3, and superstrate Sb 2 Se 3 solar cells fabricated via thermal evaporation have achieved 3.7% device efficiency by our group6, suggesting the promise of Sb 2 Se 3 for photovoltaic absorber application.…”

mentioning

confidence: 87%

Hydrazine solution processed Sb2S3, Sb2Se3 and Sb2(S1−xSex)3 film: molecular precursor identification, film fabrication and band gap tuning

Xue

Leng

et al. 2015

Sci Rep

Self Cite

101

View full text Add to dashboard Cite

Sb2(S1−xSex)3 (0 ≤ x ≤ 1) compounds have been proposed as promising light-absorbing materials for photovoltaic device applications. However, no systematic study on the synthesis and characterization of polycrystalline Sb2(S1−xSex)3 thin films has been reported. Here, using a hydrazine based solution process, single-phase Sb2(S1−xSex)3 films were successfully obtained. Through Raman spectroscopy, we have investigated the dissolution mechanism of Sb in hydrazine: 1) the reaction between Sb and S/Se yields [Sb4S7]2-/[Sb4Se7]2- ions within their respective solutions; 2) in the Sb-S-Se precursor solutions, Sb, S, and Se were mixed on a molecular level, facilitating the formation of highly uniform polycrystalline Sb2(S1−xSex)3 thin films at a relatively low temperature. UV-vis-NIR transmission spectroscopy revealed that the band gap of Sb2(S1−xSex)3 alloy films had a quadratical relationship with the Se concentration x and it followed the equation , where the bowing parameter was 0.118 eV. Our study provides a valuable guidance for the adjustment and optimization of the band gap in hydrazine solution processed Sb2(S1−xSex)3 alloy films for the future fabrication of improved photovoltaic devices.

show abstract

“…Mater. [50,51] Besides, a good ohmic contact between absorber and Au electrode can be formed through adjusting the band offset. Basing on above values, the W d is calculated to be 181 nm which is only 37% of the actual thickness of the absorber (485 nm).…”

Section: Wwwadvelectronicmatdementioning

confidence: 99%

Over 6% Certified Sb₂(S,Se)₃ Solar Cells Fabricated via In Situ Hydrothermal Growth and Postselenization

Wang

Chen

et al. 2018

Adv Elect Materials

View full text Add to dashboard Cite

eV), [1][2][3] remarkable absorption coefficient (≈10 5 cm −1 ), [4,5] excellent stability, and low-toxicity component. To promote the power conversion efficiency, many methods have been successfully applied to fabricate Sb 2 (S x ,Se 1-x ) 3 solar cells. For example, the rapid thermal evaporation (RTE) method [6] have been gathered many attentions for the fabrication of Sb 2 Se 3 solar cells. Recently, Tang and co-workers used a novel vapor transport deposition (VTD) way to refresh the recorded efficiency of Sb 2 Se 3 solar cell to 7.6%, [7] which has been made a great progress since Sb 2 Se 3 was successfully achieved a power conversion efficiency (PCE) of 0.03% in 2002. [8] On the other hand, Choi et al. have achieved a PCE of 7.5% [9] for Sb 2 S 3 by chemical bath deposition (CBD). Although the VTD and CBD methods have achieved impressive efficiency over 7%, a number of processing issues arise in these approaches. For example, VTD deposition processes are complex and expensive. While the nonvacuums CBD method also has weaknesses such as (i) the film prepared from CBD method is tend to be amorphous; [8,10] (ii) the Sb 2 S 3 film prepared by CBD method is antimony rich which results in a higher mean coordination number (MCN) than the stoichiometric Sb 2 S 3 . It will make it too rigid to flatten out after the annealing step; [11] (iii) the Sb 2 S 3 film prepared by CBD method inevitably includes impurities such as SbOCl, Sb 2 O 3 , and Sb 2 (SO 3 ) 3 . [12][13][14] Meanwhile, although the crystalline of the film fabricated by RTE or VTD is promising, the compactness of the absorber needs a further improvement. Thus, seeking for an effective and easy-handle nonvacuum approach to improve Sb 2 (S x ,Se 1-x ) 3 thin film solar cells is urgently needed.Since the hydrothermal method is a useful method in thin film preparation, the quality and homogeneity of the film deposited by this method is remarkable, which is expected to be able to solve the problem mentioned above and cut down the cost of fabrication. Liu et al. have taken this method to prepare the Sb 2 S 3 thin films, but there is no device reported. [15] In our previous work, double buffer layer was used to tune the band align and reduce recombination, which has achieved V oc as high as 792 mV based on hydrothermal derived Sb 2 (S x ,Se 1-x ) 3 solar cell. [16] But the thick buffer layer (60 nm TiO 2 + 60 nm CdS) inevitably increases the R s of device and decreases the transmittance as well, both of which will reduce J sc and PCE. Besides, the formation mechanism for Sb 2 S 3 thin films based Antimony sulfide-selenide Sb 2 (S,Se) 3 as a promising absorber material has drawn extensive attention owing to its rewarding photoelectric properties, low toxicity, and earth abundant components. Here, an available and highly effective method, in situ hydrothermal growth accompanied with postselenization, is successfully applied to fabricate Sb 2 (S,Se) 3 solar cells. The rationale for the preparation of Sb 2 S 3 precursors by the hydrothermal method is discussed, and ...

show abstract

Selenization of Sb2Se3 absorber layer: An efficient step to improve device performance of CdS/Sb2Se3 solar cells

Cited by 161 publications

References 23 publications

Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

Hydrazine solution processed Sb2S3, Sb2Se3 and Sb2(S1−xSex)3 film: molecular precursor identification, film fabrication and band gap tuning

Over 6% Certified Sb₂(S,Se)₃ Solar Cells Fabricated via In Situ Hydrothermal Growth and Postselenization

Contact Info

Product

Resources

About

Selenization of Sb2Se3 absorber layer: An efficient step to improve device performance of CdS/Sb2Se3 solar cells

Cited by 161 publications

References 23 publications

Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

Hydrazine solution processed Sb2S3, Sb2Se3 and Sb2(S1−xSex)3 film: molecular precursor identification, film fabrication and band gap tuning

Over 6% Certified Sb2(S,Se)3 Solar Cells Fabricated via In Situ Hydrothermal Growth and Postselenization

Contact Info

Product

Resources

About

Over 6% Certified Sb₂(S,Se)₃ Solar Cells Fabricated via In Situ Hydrothermal Growth and Postselenization