TY - JOUR
T1 - Effect of zero- to one-dimensional transformation on multiparticle auger recombination in semiconductor quantum rods
AU - Htoon, H.
AU - Hollingsworth, J. A.
AU - Dickerson, R.
AU - Klimov, V. I.
N1 - Funding Information:
This work was supported by the Chemical Sciences, Biosciences, and Geosciences Division of the Office of Basic Energy Sciences, Office of Science, U.S. Depart?>ment of Energy and Los Alamos LDRD funds.
PY - 2003
Y1 - 2003
N2 - We study the effect of the zero- to one-dimensional (1D) transformation on multiparticle Auger recombination using a series of elongated semiconductor nanocrystals (quantum rods). We observe a transition from the three- to two-particle recombination process as the nanocrystal aspect ratio is increased. This transition indicates that in the 1D confinement limit, Auger decay is dominated by Coulomb interactions between 1D excitons that recombine in a bimolecular fashion. One consequence of this effect is strongly reduced decay rates of higher multiparticle states that lead to increased optical-gain lifetimes and efficient light amplification due to involvement of excited electronic states.
AB - We study the effect of the zero- to one-dimensional (1D) transformation on multiparticle Auger recombination using a series of elongated semiconductor nanocrystals (quantum rods). We observe a transition from the three- to two-particle recombination process as the nanocrystal aspect ratio is increased. This transition indicates that in the 1D confinement limit, Auger decay is dominated by Coulomb interactions between 1D excitons that recombine in a bimolecular fashion. One consequence of this effect is strongly reduced decay rates of higher multiparticle states that lead to increased optical-gain lifetimes and efficient light amplification due to involvement of excited electronic states.
UR - http://www.scopus.com/inward/record.url?scp=0346688982&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0346688982&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.91.227401
DO - 10.1103/PhysRevLett.91.227401
M3 - Article
AN - SCOPUS:0346688982
VL - 91
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 22
ER -