Light harvesting enhancement upon incorporating alloy structured CdSeXTe1−X quantum dots in DPP:PC61BM bulk heterojunction solar cells

Journal article
(Original article)


Publication Details

Author(s): Soltani R, Katbab AA, Schaumberger K, Gasparini N, Brabec C, Rechberger S, Spiecker E, Alabau AG, Ruland A, Saha A, Guldi DM, Sgobba V, Ameri T
Journal: Journal of Materials Chemistry C
Publisher: Royal Society of Chemistry
Publication year: 2017
Volume: 5
Journal issue: 3
Pages range: 654-662
ISSN: 2050-7526
Language: English


Abstract


Hybrid solar cells based on the pDPP5T-2 electron donating polymer, [6,6]-phenyl-C-butyric acid methyl ester (PCBM) and cadmium selenide telluride (CdSeTe) quantum dots (QDs) are fabricated and their photovoltaic performance and optoelectronic properties are investigated as a function of QD loading. The power conversion efficiency (PCE) of hybrid solar cells is improved up to 5.11% for the device containing 4 wt% of QDs which is mainly due to the enhancement in short circuit current density (J) resulting from increased light harvesting. A full-fledged study is performed on the microstructure, charge transfer/transport and recombination mechanisms of our ternary hybrid solar cells by employing various advanced techniques. The transmission electron microscopy (TEM) results reveal the non-agglomerated and uniform distribution of the CdSeTe QDs within the pDPP5T-2:PCBM host matrix at low QD concentrations. Transient absorption spectroscopy (TAS) showed a slower charge carrier recombination rate due to the introduction of QDs into the photoactive layer. It can be attributed to the more efficient exciton dissociation in ternary systems. These findings are consistent with the photovoltaic properties of the device.



FAU Authors / FAU Editors

Ameri, Tayebeh Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Gasparini, Nicola
Institute Materials for Electronics and Energy Technology (i-MEET)
Guldi, Dirk Michael Prof. Dr.
Lehrstuhl für Physikalische Chemie I
Rechberger, Stefanie Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Saha, Avishek
Lehrstuhl für Physikalische Chemie I
Schaumberger, Kerstin
Spiecker, Erdmann Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)


External institutions with authors

Amirkabir University of Technology (AUT) / دانشگاه صنعتی امیرکبیر
Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)
University of Wollongong (UOW)


Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials
A2 Nanoanalysis and Microscopy
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Soltani, R., Katbab, A.A., Schaumberger, K., Gasparini, N., Brabec, C., Rechberger, S.,... Ameri, T. (2017). Light harvesting enhancement upon incorporating alloy structured CdSeXTe1−X quantum dots in DPP:PC61BM bulk heterojunction solar cells. Journal of Materials Chemistry C, 5(3), 654-662. https://dx.doi.org/10.1039/c6tc04308a

MLA:
Soltani, Rezvan, et al. "Light harvesting enhancement upon incorporating alloy structured CdSeXTe1−X quantum dots in DPP:PC61BM bulk heterojunction solar cells." Journal of Materials Chemistry C 5.3 (2017): 654-662.

BibTeX: 

Last updated on 2019-29-05 at 08:31