In situ sulfurization to generate Sb2(Se1 − xSx)3 alloyed films and their application for photovoltaics

Ye, Bo; Qin, Sikai; Xue, Desheng; Chao, Chen; He, Ying; Niu, Dongmei; Huang, Han; Tang, Jiang

doi:10.1002/pip.2819

Cited by 79 publications

(66 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…And the grain size of Sb 2 (Se x S 1–x ) 3 shrank from 500 to 200 nm as Se contents increased gradually. This evolution trend was consistent with XRD results, the same as our previous report …”

Section: Resultssupporting

confidence: 93%

“…The peak PCE was 4.17% achieved from Sb 2 (Se 0.68 S 0.32 ) 3 with a V oc of 0.42 V, a J sc of 19.8 mA cm −2 and an FF of 49.2%. Such PCE data was lower than the average value of the reported Sb 2 (S x Se 1–x ) 3 device and the main loss came from V oc and J sc . This occurrence might be due to the thicker CdS film, and some direct contact between the FTO and absorber layer appeared due to the rough surface of FTO and non‐uniformity of the overall device thickness …”

Section: Resultscontrasting

confidence: 70%

“…Chen et al designed a controlled diffusion solid‐state reaction between Se and Sb 2 S 3 film via chemical bath deposition (CBD) and obtain 5.71% efficiency. Tang et al reported 5.79% PCE using in‐situ‐sulfurization of Sb 2 Se 3 . Oscar et al adopted thermal evaporation of CBD based Sb 2 S 3 and Sb 2 Se 3 mixture to fabricate planar Sb 2 (S 0.47 Se 0.53 ) 3 solar cells with a PCE of 5.47% .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficient Double Buffer Layer Sb₂ (Se_xS_1–x)₃ Thin Film Solar Cell Via Single Source Evaporation

et al. 2018

Self Cite

View full text Add to dashboard Cite

Sb2(SexS1–x)3 has been proven a very promising light absorbing material for photovoltaic applications due to its high stability, tunable band gap, non‐toxic element, and high extinction coefficient. For Sb2(SexS1–x)3 alloy film deposition, the authors develop a single source based rapid‐thermal‐evaporation (RTE) method instead of the traditional in‐situ sulfurization or double source co‐evaporation based RTE method. The absorber band gap can be precisely tuned from 1.1 to 1.7 eV by simply varying the molar ratio of Sb2Se3 and Sb2S3 source powder. From the systematical composition screening, FTO/CdS/Sb2(Se0.68S0.32)3/Au devices show higher power conversion efficiency (PCE ∼ 4.17%) when compared with other absorber compositions based devices. In order to achieve thinner ETL layers and simultaneously avoid pinholes led by rough FTO surface, we introduce for the first time double buffer layer in the Sb2(Se0.68S0.32)3 device system which could further improve the device efficiency from 4.17% to 5.73%. The double buffer layer ZnO/CdS helped to form graded energy band alignment, suppress charge recombination and efficiently extract electrons. The devices obtained higher Jsc and Voc supported by various physical characterization analyses. The facile single source deposition method, efficient double buffer layer device structure and notable PCE are expected to pronouncedly promote antimony chalcogenide device development.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultscontrasting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient Double Buffer Layer Sb₂ (Se_xS_1–x)₃ Thin Film Solar Cell Via Single Source Evaporation

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is reported that a single-junction solar cell with a 1.17 eV absorber possesses theoretical open-circuit voltage (V oc ) of 0.90 V, short-circuit current density (J sc ) of 42 mA cm −2 and fill factor (FF) of 0.86, [17] which leads to ≈30% theoretical PCE. [18] However, the efficiency of the fabricated Sb 2 (S x ,Se 1-x ) 3 solar cell is lower than that of theory.…”

Section: Thin Film Solar Cellsmentioning

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

“…4i. Compared with vacuum-annealed Sb 2 S 3 /CdS device, selenized device had a satisfactory built-in electrical field at the p-n junction due to the favorable E g of Sb 2 S 3 (1.61 eV) which provided a higher V OC than Sb 2 Se 3 ( E g = 1.2 eV) [28, 29]. Due to the gradient distribution of composition, selenized Sb 2 S 3 showed a continuous E v varying from − 5.37 to − 5.08 eV and a lower barrier for photogenerated positive carrier transport from p-n junction vicinity to the anode.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Photovoltaic Properties in Sb2S3 Planar Heterojunction Solar Cell with a Fast Selenylation Approach

et al. 2018

View full text Add to dashboard Cite

Poor thermostability of Sb2S3 in vacuum hinders the possibility of achieving high-quality crystalline films. In order to enhance the photovoltaic properties of Sb2S3 planar heterojunction solar cells, a selenylation-based post-treatment approach has been employed. Selenylation performed over 15 min on the Sb2S3 film resulted in an enhancement in the conversion efficiency from ~ 0.01 to 2.20%. Effect of the selenylation on the evolution of morphology, crystal structure, composition distributions, and photovoltaic behavior has been investigated. The variation in the energy levels of Sb2S3/CdS junction has been also been discussed. Results show that selenylation not only enhanced the crystallinity of Sb2S3 film but also provided a suitable energy level which facilitated charge transport from absorber to the buffer layer.

show abstract

In situ sulfurization to generate Sb₂(Se_1 − xS_x)₃ alloyed films and their application for photovoltaics

Cited by 79 publications

References 37 publications

Efficient Double Buffer Layer Sb₂ (Se_xS_1–x)₃ Thin Film Solar Cell Via Single Source Evaporation

Efficient Double Buffer Layer Sb₂ (Se_xS_1–x)₃ Thin Film Solar Cell Via Single Source Evaporation

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

Enhanced Photovoltaic Properties in Sb2S3 Planar Heterojunction Solar Cell with a Fast Selenylation Approach

Contact Info

Product

Resources

About

In situ sulfurization to generate Sb2(Se1 − xSx)3 alloyed films and their application for photovoltaics

Cited by 79 publications

References 37 publications

Efficient Double Buffer Layer Sb2 (SexS1–x)3 Thin Film Solar Cell Via Single Source Evaporation

Efficient Double Buffer Layer Sb2 (SexS1–x)3 Thin Film Solar Cell Via Single Source Evaporation

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

Enhanced Photovoltaic Properties in Sb2S3 Planar Heterojunction Solar Cell with a Fast Selenylation Approach

Contact Info

Product

Resources

About

In situ sulfurization to generate Sb₂(Se_1 − xS_x)₃ alloyed films and their application for photovoltaics

Efficient Double Buffer Layer Sb₂ (Se_xS_1–x)₃ Thin Film Solar Cell Via Single Source Evaporation

Efficient Double Buffer Layer Sb₂ (Se_xS_1–x)₃ Thin Film Solar Cell Via Single Source Evaporation

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