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Boosting photovoltaic performance for Sb 2 S 3 solar cells by ionic liquid-assisted hydrothermal synthesis
Bulk and surface trap-states in the Sb 2 S 3 films are considered one of the crucial energy loss mechanisms for achieving high photovoltaic performance in planar Sb 2 S 3 solar cells. Because ionic liquid additives offer interesting physicochemical properties to control the synthesis of inorganic ma...
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Published in: | Nanotechnology 2022-10, Vol.33 (44), p.445401 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Bulk and surface trap-states in the Sb
2
S
3
films are considered one of the crucial energy loss mechanisms for achieving high photovoltaic performance in planar Sb
2
S
3
solar cells. Because ionic liquid additives offer interesting physicochemical properties to control the synthesis of inorganic material, in this work we propose the addition of 1-Butyl-3-methylimidazolium hydrogen sulfate (BMIMHS) into a Sb
2
S
3
hydrothermal precursor solution as a facile way to fabricate low-defect Sb
2
S
3
solar cells. Lower presence of small particles on the surface, as well as higher crystallinity are demonstrated in the BMIMHS-assisted Sb
2
S
3
films. Moreover, analyses of dark current density-voltage
J
–
V
curves, surface photovoltage transient and intensity-modulated photocurrent spectroscopy have suggested that adding BMIMHS results in high-quality Sb
2
S
3
films and a successful defect passivation. Consequently, the best-performing BMIMHS-assisted device exhibits a 15.4% power conversion efficiency enhancement compared to that of control device. These findings show that ionic liquid BMIMHS can effectively be used to obtain high-quality Sb
2
S
3
films with low-defects and improved optoelectronic properties. |
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ISSN: | 0957-4484 1361-6528 |
DOI: | 10.1088/1361-6528/ac84e3 |