Journal
CHEMICAL SCIENCE
Volume 2, Issue 12, Pages 2396-2401Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sc00514f
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Funding
- European Research Council [ERCstg-POLYDOT]
- CONSOLIDER HOPE [0007-2007]
- MICINN [CTQ-2007-60746-BQU]
- Catalonian regional government [2009 SGR 207]
- German federal Ministry of Education and research (BMBF) [03X3517E]
- German Research Foundation (DFG) graduate school [GRK 1322]
- ICREA Funding Source: Custom
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The interfacial charge transfer recombination processes under working conditions that limit the device performance in polymer:CdSe quantum dot bulk heterojunction hybrid solar cells have been measured. The recombination lifetimes for electrons and holes in the device show an exponential dependence in a similar way to that observed for other molecular based solar cells such as bulk heterojunction organic solar cells (OSC) and dye sensitized solar cells (DSSC). The implications of this unprecedented observation on the design of novel devices are discussed as well as the relationship between the charge accumulation in these devices under operation and the device open-circuit voltage.
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