Thermal Properties of TiO2/PbS Nanoparticle Solar Cells
Photovoltaic performance is shown to depend on ligand capping on PbS nanoparticle solar cells by varying the temperature between 140K and 350K. The thermal response of open‐circuit voltage, short‐circuit current density, fill‐factor and shunt resistance varies between the ligands. A large increase i...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-12-01
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| Series: | Nanomaterials and Nanotechnology |
| Subjects: | |
| Online Access: | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/thermal-properties-of-tio2-pbs-nanoparticle-solar-cells |
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| Summary: | Photovoltaic performance is shown to depend on
ligand capping on PbS nanoparticle solar cells by varying
the temperature between 140K and 350K. The thermal
response of open‐circuit voltage, short‐circuit current
density, fill‐factor and shunt resistance varies between the
ligands. A large increase in short‐circuit current density at
low temperatures is observed for 1,2‐ethanedithiol and
3‐mercaptopropionic acid and a relatively constant shortcircuit
current density is observed for the stiffer
1,4‐benzenedithiol. Dark data provide evidence for
tunnelling transport being the dominant charge conduction
mechanism for all three ligand devices with recombination
occurring within deep trap states. Under illumination,
devices exhibit band‐to‐band recombination, indicated by
an ideality factor of nearly unity. |
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| ISSN: | 1847-9804 |