Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Enhanced infrared photo-response from GaSb/GaAs quantum ring solar cells
AU - Carrington, P. J.
AU - Wagener, M. C.
AU - Botha, J. R.
AU - Sanchez, A. M.
AU - Krier, A.
PY - 2012/12/3
Y1 - 2012/12/3
N2 - GaAs-based solar cells containing stacked layers of nanostructured type II GaSb quantum ring solar cells are reported which show significantly enhanced infrared photo-response extending out to 1400 nm. The ring formation reduces the net strain energy associated with the large lattice mismatch making it possible to stack multi-layers without the need for strain balancing. The (1 sun) short-circuit current for a 10 layer sample is enhanced by similar to 6% compared to a GaAs control cell. The corresponding open-circuit voltage of 0.6 V is close to the theoretical maximum expected from such structures. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768942]
AB - GaAs-based solar cells containing stacked layers of nanostructured type II GaSb quantum ring solar cells are reported which show significantly enhanced infrared photo-response extending out to 1400 nm. The ring formation reduces the net strain energy associated with the large lattice mismatch making it possible to stack multi-layers without the need for strain balancing. The (1 sun) short-circuit current for a 10 layer sample is enhanced by similar to 6% compared to a GaAs control cell. The corresponding open-circuit voltage of 0.6 V is close to the theoretical maximum expected from such structures. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768942]
KW - gallium arsenide
KW - gallium compounds
KW - III-V semiconductors
KW - infrared spectra
KW - nanostructured materials
KW - semiconductor quantum dots
KW - solar cells
U2 - 10.1063/1.4768942
DO - 10.1063/1.4768942
M3 - Journal article
VL - 101
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 23
M1 - 231101
ER -