Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2970157
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Molecular materials may overcome some of the difficulties for making an intermediate band solar cell by storing energy in long-lived triplet states. Both the problems of fast nonradiative interband relaxation and selective photon absorption can be solved by this approach. A practical implementation of the molecular intermediate band solar cell is considered with a symmetric band alignment, resting on a proven triplet-triplet annihilation process. The limiting power conversion efficiency for this system exceeds that of a single bandgap device over a broad range, peaking at 40.6% for 1.9 eV under 1 sun illumination. (C) 2008 American Institute of Physics.
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