Abstract
The light-harvesting Sb2S3 surface on mesoporous-TiO2 in inorganic-organic heterojunction solar cells is sulfurized with thioacetamide (TA). The photovoltaic performances are compared before and after TA treatment, and the state of the Sb2S3 is investigated by X-ray diffraction, X-ray photoelectron spectroscopy, and deep-level transient spectroscopy (DLTS). Although there are no differences in crystallinity and composition, the TA-treated solar cells exhibit significantly enhanced performance compared to pristine Sb2S3-sensitized solar cells. From DLTS analysis, the performance enhancement is mainly attributed to the extinction of trap sites, which are present at a density of (2-5) × 1014 cm-3 in Sb2S3, by TA treatment. Through such a simple treatment, the cell records an overall power conversion efficiency (PCE) of 7.5% through a metal mask under simulated illumination (AM 1.5G, 100 mW cm-2) with a very high open circuit voltage of 711.0 mV. This PCE is, thus far, the highest reported for fully solid-state chalcogenide-sensitized solar cells. The light-harvesting Sb 2S3 surface on mesoporous-TiO2 in inorganic-organic heterojunction solar cells is sulfurized with thioacetamide. Through such a simple treatment, the cell records an overall power conversion efficiency of 7.5% under simulated illumination (AM 1.5G, 100 mW cm -2) and the performance enhancement is mainly attributed to the extinction of trap sites by deep-level transient spectroscopy analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 3587-3592 |
| Number of pages | 6 |
| Journal | Advanced Functional Materials |
| Volume | 24 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 2014 Jun 18 |
| Externally published | Yes |
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Keywords
- deep-level transient spectroscopy
- high efficiency
- solar cells
- thioacetamide
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Condensed Matter Physics
- Electrochemistry
Cite this
Highly improved Sb2S3 sensitized-inorganic-organic heterojunction solar cells and quantification of traps by deep-level transient spectroscopy. / Choi, Yong Chan; Lee, Dong Uk; Noh, Jun Hong; Kim, Eun Kyu; Seok, Sang Il.
In: Advanced Functional Materials, Vol. 24, No. 23, 18.06.2014, p. 3587-3592.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Highly improved Sb2S3 sensitized-inorganic-organic heterojunction solar cells and quantification of traps by deep-level transient spectroscopy
AU - Choi, Yong Chan
AU - Lee, Dong Uk
AU - Noh, Jun Hong
AU - Kim, Eun Kyu
AU - Seok, Sang Il
PY - 2014/6/18
Y1 - 2014/6/18
N2 - The light-harvesting Sb2S3 surface on mesoporous-TiO2 in inorganic-organic heterojunction solar cells is sulfurized with thioacetamide (TA). The photovoltaic performances are compared before and after TA treatment, and the state of the Sb2S3 is investigated by X-ray diffraction, X-ray photoelectron spectroscopy, and deep-level transient spectroscopy (DLTS). Although there are no differences in crystallinity and composition, the TA-treated solar cells exhibit significantly enhanced performance compared to pristine Sb2S3-sensitized solar cells. From DLTS analysis, the performance enhancement is mainly attributed to the extinction of trap sites, which are present at a density of (2-5) × 1014 cm-3 in Sb2S3, by TA treatment. Through such a simple treatment, the cell records an overall power conversion efficiency (PCE) of 7.5% through a metal mask under simulated illumination (AM 1.5G, 100 mW cm-2) with a very high open circuit voltage of 711.0 mV. This PCE is, thus far, the highest reported for fully solid-state chalcogenide-sensitized solar cells. The light-harvesting Sb 2S3 surface on mesoporous-TiO2 in inorganic-organic heterojunction solar cells is sulfurized with thioacetamide. Through such a simple treatment, the cell records an overall power conversion efficiency of 7.5% under simulated illumination (AM 1.5G, 100 mW cm -2) and the performance enhancement is mainly attributed to the extinction of trap sites by deep-level transient spectroscopy analysis.
AB - The light-harvesting Sb2S3 surface on mesoporous-TiO2 in inorganic-organic heterojunction solar cells is sulfurized with thioacetamide (TA). The photovoltaic performances are compared before and after TA treatment, and the state of the Sb2S3 is investigated by X-ray diffraction, X-ray photoelectron spectroscopy, and deep-level transient spectroscopy (DLTS). Although there are no differences in crystallinity and composition, the TA-treated solar cells exhibit significantly enhanced performance compared to pristine Sb2S3-sensitized solar cells. From DLTS analysis, the performance enhancement is mainly attributed to the extinction of trap sites, which are present at a density of (2-5) × 1014 cm-3 in Sb2S3, by TA treatment. Through such a simple treatment, the cell records an overall power conversion efficiency (PCE) of 7.5% through a metal mask under simulated illumination (AM 1.5G, 100 mW cm-2) with a very high open circuit voltage of 711.0 mV. This PCE is, thus far, the highest reported for fully solid-state chalcogenide-sensitized solar cells. The light-harvesting Sb 2S3 surface on mesoporous-TiO2 in inorganic-organic heterojunction solar cells is sulfurized with thioacetamide. Through such a simple treatment, the cell records an overall power conversion efficiency of 7.5% under simulated illumination (AM 1.5G, 100 mW cm -2) and the performance enhancement is mainly attributed to the extinction of trap sites by deep-level transient spectroscopy analysis.
KW - deep-level transient spectroscopy
KW - high efficiency
KW - solar cells
KW - thioacetamide
UR - http://www.scopus.com/inward/record.url?scp=84902368368&partnerID=8YFLogxK
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U2 - 10.1002/adfm.201304238
DO - 10.1002/adfm.201304238
M3 - Article
VL - 24
SP - 3587
EP - 3592
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
IS - 23
ER -