Hybrid P3HT/CdSe photovoltaic cells: Effects of nanocrystal size and device aging

Jihua Yang, Renjia Zhou, Aiwei Tang, Jiangeng Xue

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Hybrid solar cells based on conjugated polymers and colloidally synthesized inorganic nanoparticles have been recognized as an alternative to all-organic solar cells due to the intrinsically higher charge transport property in inorganic component. In this work, CdSe nanoparticles with different sizes, served as the electron acceptor, have been used together with poly (3-hexylthiophene) (P3HT) as the active layer for the hybrid solar cells. The power-conversion efficiency (ηP) of these devices strongly depends on the size of the CdSe nanoparticles, increasing from ηp ∼0.5% for 4.0 nm size nanoparticles to ηp ∼2.4% for 6.8 nm size nanoparticles under AM 1.5 G solar illumination. Furthermore, the devices also exhibit an unusual initial aging period when exposed to the air, which results in a significant enhancement in the short-circuit current, open-circuit voltage and power conversion efficiency.

Original languageEnglish (US)
Title of host publicationOrganic Materials and Devices for Sustainable Energy Systems
Pages91-96
Number of pages6
StatePublished - Dec 24 2010
Event2009 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 29 2009Dec 3 2009

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1212
ISSN (Print)0272-9172

Other

Other2009 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA
Period11/29/0912/3/09

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