| Description |
iii, 27 p. : digital, PDF file |
| Series |
Subcontract report ; NREL/SR-520-44685 |
|
NREL/SR ; 520-44685.
|
| System Details |
Mode of access via the NREL web site. |
| Note |
Title from title screen (viewed on Jan. 7, 2009). |
|
"December 2008." |
| Summary |
Sensitizer dyes capable of producing two triplet excited states from a singlet excited state produced by the absorption of a single photon would allow an increase of the efficiency of photovoltaic cells by up to a factor of 1.5, provided that each triplet injects an electron into a semiconductor such as TiO2. Although singlet fission in certain crystals and polymers was reported long ago, little is known about its efficiency in dyes suitable for use as sensitizers of photoinduced charge separation on semiconductors surfaces. In summary, we have produced the first designed crystalline material for singlet fission, and we have made the first determinations of the coupling strength in a covalent dimer that is required for efficient singlet fission. We have suggested paths for overcoming a problem that has been identified and have already started to develop them in a follow-up project. |
| Subject |
Semiconductors -- Research.
|
|
Solar cells -- Design and construction.
|
|
Photovoltaic cells.
|
| Added Author |
National Renewable Energy Laboratory (U.S.)
|
| Gpo Item No. |
0430-P-05 (online) |
| Sudoc No. |
E 9.18:NREL/SR-520-44685 |
|
