An insight into the mechanism of charge-transfer of hybrid polymer: ternary/quaternary chalcopyrite colloidal nanocrystals
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
An insight into the mechanism of charge-transfer of hybrid polymer: ternary/quaternary chalcopyrite colloidal nanocrystals
|
|
| Creator |
Chawla , Parul
Singh, Son Sharma, Shailesh Narain |
|
| Subject |
Materials Science
Physics |
|
| Description |
In this work, we have demonstrated the structural and optoelectronic properties of the surface of ternary/quaternary (CISe/CIGSe/CZTSe) chalcopyrite nanocrystallites passivated by tri-n-octylphosphine-oxide (TOPO) and tri-n-octylphosphine (TOP) and compared their charge transfer characteristics in the respective polymer: chalcopyrite nanocomposites by dispersing them in poly(3-hexylthiophene) polymer. It has been found that CZTSe nanocrystallites due to their high crystallinity and well-ordered 3-dimensional network in its pristine form exhibit a higher steric- and photo-stability, resistance against coagulation and homogeneity compared to the CISe and CIGSe counterparts. Moreover, CZTSe nanocrystallites display efficient photoluminescence quenching as evident from the high value of the Stern-Volmer quenching constant (K-SV) and eventually higher charge transfer efficiency in their respective polymer P3HT:CZTSe composites. We modelled the dependency of the charge transfer from the donor and the charge separation mechanism across the donor-acceptor interface from the extent of crystallinity of the chalcopyrite semiconductors (CISe/CIGSe/CZTSe). Quaternary CZTSe chalcopyrites with their high crystallinity and controlled morphology in conjunction with regioregular P3HT polymer is an attractive candidate for hybrid solar cells applications
|
|
| Publisher |
Beilstein-Institut
|
|
| Date |
2014-08-08
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://npl.csircentral.net/1161/1/24.pdf
Chawla , Parul and Singh, Son and Sharma, Shailesh Narain (2014) An insight into the mechanism of charge-transfer of hybrid polymer: ternary/quaternary chalcopyrite colloidal nanocrystals. Beilstein Journal of Nanotechnology, 5. pp. 1235-1244. ISSN 2190-4286 |
|
| Relation |
http://npl.csircentral.net/1161/
|
|