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Preparation of SnS2 colloidal quantum dots and their application in organic/inorganic hybrid solar cells.

Tan F, Qu S, Wu J, Liu K, Zhou S, Wang Z - Nanoscale Res Lett (2011)

Bottom Line: Photoluminescence measurement has been performed to study the surfactant effect on the excitons splitting process.The photocurrent of solar cells with the hybrid depends greatly on the ligands exchange as well as the device heat treatment.AFM characterization has demonstrated morphology changes happening upon surfactant replacement and annealing, which can explain the performance variation of hybrid solar cells.

View Article: PubMed Central - HTML - PubMed

Affiliation: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P,O, Box 912, Beijing 100083, PR China. qsc@semi.ac.cn.

ABSTRACT
Dispersive SnS2 colloidal quantum dots have been synthesized via hot-injection method. Hybrid photovoltaic devices based on blends of a conjugated polymer poly[2-methoxy-5-(3",7"dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) as electron donor and crystalline SnS2 quantum dots as electron acceptor have been studied. Photoluminescence measurement has been performed to study the surfactant effect on the excitons splitting process. The photocurrent of solar cells with the hybrid depends greatly on the ligands exchange as well as the device heat treatment. AFM characterization has demonstrated morphology changes happening upon surfactant replacement and annealing, which can explain the performance variation of hybrid solar cells.

No MeSH data available.


Relative PL intensity variation of MDMO-PPV:SnS2 hybrid before and after pyridine exchange at different SnS2 concentrations.
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Figure 6: Relative PL intensity variation of MDMO-PPV:SnS2 hybrid before and after pyridine exchange at different SnS2 concentrations.

Mentions: The surfactant on the SnS2 particles affects the electron transfer from MDMO-PPV to SnS2 so that the PL quenching intensity may be influenced. This can be demonstrated by replacing the long insulating OLA ligands with pyridine. As is shown in Figure 6, comparing with that of SnS2 with OLA ligands on surface, the PL intensity is obviously further decreased after treating with pyridine, suggesting a more efficient charge transfer between the organic and the inorganic materials. This is of great importance for the use of active layers in hybrid solar cells.


Preparation of SnS2 colloidal quantum dots and their application in organic/inorganic hybrid solar cells.

Tan F, Qu S, Wu J, Liu K, Zhou S, Wang Z - Nanoscale Res Lett (2011)

Relative PL intensity variation of MDMO-PPV:SnS2 hybrid before and after pyridine exchange at different SnS2 concentrations.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211364&req=5

Figure 6: Relative PL intensity variation of MDMO-PPV:SnS2 hybrid before and after pyridine exchange at different SnS2 concentrations.
Mentions: The surfactant on the SnS2 particles affects the electron transfer from MDMO-PPV to SnS2 so that the PL quenching intensity may be influenced. This can be demonstrated by replacing the long insulating OLA ligands with pyridine. As is shown in Figure 6, comparing with that of SnS2 with OLA ligands on surface, the PL intensity is obviously further decreased after treating with pyridine, suggesting a more efficient charge transfer between the organic and the inorganic materials. This is of great importance for the use of active layers in hybrid solar cells.

Bottom Line: Photoluminescence measurement has been performed to study the surfactant effect on the excitons splitting process.The photocurrent of solar cells with the hybrid depends greatly on the ligands exchange as well as the device heat treatment.AFM characterization has demonstrated morphology changes happening upon surfactant replacement and annealing, which can explain the performance variation of hybrid solar cells.

View Article: PubMed Central - HTML - PubMed

Affiliation: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P,O, Box 912, Beijing 100083, PR China. qsc@semi.ac.cn.

ABSTRACT
Dispersive SnS2 colloidal quantum dots have been synthesized via hot-injection method. Hybrid photovoltaic devices based on blends of a conjugated polymer poly[2-methoxy-5-(3",7"dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) as electron donor and crystalline SnS2 quantum dots as electron acceptor have been studied. Photoluminescence measurement has been performed to study the surfactant effect on the excitons splitting process. The photocurrent of solar cells with the hybrid depends greatly on the ligands exchange as well as the device heat treatment. AFM characterization has demonstrated morphology changes happening upon surfactant replacement and annealing, which can explain the performance variation of hybrid solar cells.

No MeSH data available.