Remote Trap Passivation in Colloidal Quantum Dot Bulk Nano-heterojunctions and Its Effect in Solution-Processed Solar Cells

More‐efficient charge collection and suppressed trap recombination in colloidal quantum dot (CQD) solar cells is achieved by means of a bulk nano‐heterojunction (BNH) structure, in which p‐type and n‐type materials are blended on the nanometer scale. The improved performance of the BNH devices, comp...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2014-07, Vol.26 (27), p.4741-4747
Main Authors: Rath, Arup. K., Pelayo Garcia de Arquer, F., Stavrinadis, Alexandros, Lasanta, Tania, Bernechea, Maria, Diedenhofen, Silke L., Konstantatos, Gerasimos
Format: Article
Language:English
Subjects:
bulk nano-heterojunctions
colloidal quantum dots
Colloids
Devices
Electric Power Supplies
Lead - chemistry
Nanostructure
Nanotechnology - instrumentation
Passivation
Photovoltaic cells
Quantum dots
Quantum Dots - chemistry
recombination
Solar cells
Solar Energy
Solutions
Sulfides - chemistry
Temperature
trap states
Voltage
Zinc Oxide - chemistry
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Summary:More‐efficient charge collection and suppressed trap recombination in colloidal quantum dot (CQD) solar cells is achieved by means of a bulk nano‐heterojunction (BNH) structure, in which p‐type and n‐type materials are blended on the nanometer scale. The improved performance of the BNH devices, compared with that of bilayer devices, is displayed in higher photocurrents and higher open‐circuit voltages (resulting from a trap passivation mechanism).
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201400297