Hybrid Solar Cells with Prescribed Nanoscale Morphologies Based onHyperbranched Semiconductor Nanocrystals
In recent years, the search to develop large-area solar cells at low cost has led to research on photovoltaic (PV) systems based on nanocomposites containing conjugated polymers. These composite films can be synthesized and processed at lower costs and with greater versatility than the solid state inorganic semiconductors that comprise today's solar cells. However, the best nanocomposite solar cells are based on a complex architecture, consisting of a fine blend of interpenetrating and percolating donor and acceptor materials. Cell performance is strongly dependent on blend morphology, and solution-based fabrication techniques often result in uncontrolled and irreproducible blends, whose composite morphologies are difficult to characterize accurately. Here we incorporate 3-dimensional hyper-branched colloidal semiconductor nanocrystals in solution-processed hybrid organic-inorganic solar cells, yielding reproducible and controlled nanoscale morphology.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Basic Energy Sciences; DARPA VHESC Grant, NSF, ITRI (Fellowships)
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 919261
- Report Number(s):
- LBNL-61591; R&D Project: 508401; BnR: KC0203010; TRN: US200822%%200
- Journal Information:
- Nano Letters, Vol. 7, Issue 2; Related Information: Journal Publication Date: 01/2007
- Country of Publication:
- United States
- Language:
- English
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