
Proceedings Paper
Exciton hopping in carbon nanotube solar cells studied with 2D white-light spectroscopyFormat | Member Price | Non-Member Price |
---|---|---|
$17.00 | $21.00 |
Paper Abstract
Semiconducting carbon nanotubes are an exciting new material for solar cells. Mesoscale films can now be assebled and
made into devices in which the semiconducting tubes are the photoactive layer, analogous to organic dyes or quantum
dots in dye-sensitized solar cells. In order to understand their exciton transport properties, we are studying the
photophysics of these films. Obtaining a comprehensive picture of the pathways, rates, and bottlenecks is challenging
because in many cases this relaxation spans a wide range of energies. The standard approach to study such a wide
frequency range is to use a tunable pump pulse to excite each electronic transition in turn, one after another. We have
developed two-dimensional white light spectroscopy (2D WL) which allows us to simultaneously examine a spectral
range spanning roughly 500-1400 nm. The spectra resolve energy transfer between all possible combinations of
excitonic states in the chirality-selected nanotubes, thereby providing an instantaneous and comprehensive snapshot of
the dynamical pathways. The new physics we uncover has important implications in the development of carbon
nanotube electronics and optoelectronics.
Paper Details
Date Published: 9 September 2014
PDF: 4 pages
Proc. SPIE 9165, Physical Chemistry of Interfaces and Nanomaterials XIII, 91650J (9 September 2014); doi: 10.1117/12.2063327
Published in SPIE Proceedings Vol. 9165:
Physical Chemistry of Interfaces and Nanomaterials XIII
Natalie Banerji; Sophia C. Hayes; Carlos Silva, Editor(s)
PDF: 4 pages
Proc. SPIE 9165, Physical Chemistry of Interfaces and Nanomaterials XIII, 91650J (9 September 2014); doi: 10.1117/12.2063327
Show Author Affiliations
Martin T. Zanni, Univ. of Wisconsin-Madison (United States)
Published in SPIE Proceedings Vol. 9165:
Physical Chemistry of Interfaces and Nanomaterials XIII
Natalie Banerji; Sophia C. Hayes; Carlos Silva, Editor(s)
© SPIE. Terms of Use
