Nanostructured materials and photovoltaic devices including nanostructured materials
First Claim
1. A nanostructured material, comprising:
- (a) a first nano-network formed from a plurality of Si quantum dots that are at least one of fused and interconnected; and
(b) a second nano-network coupled to said first nano-network and formed from a plurality of Ge quantum dots that are at least one of fused and interconnected,said plurality of Si quantum dots having a first peak size that is from about 1 nm to about 20 nm, said plurality of Ge quantum dots having a second peak size that is greater than said first peak size to define a staggered band offset between said first nano-network and said second nano-network,said nanostructured material being configured to absorb light to produce a first type of charge carrier and a second type of charge carrier, said first type of charge carrier separating into said first nano-network in accordance with said staggered band offset and being-transported in said first nano-network, said second type of charge carrier separating into said second nano-network in accordance with said staggered band offset and being transported in said second nano-network, said nanostructured material having an absorption coefficient that is at least 103 cm−
1 within a range of wavelengths from about 400 nm to about 700 nm.
5 Assignments
0 Petitions
Accused Products
Abstract
Nanostructured materials and photovoltaic devices including nanostructured materials are described. In one embodiment, a nanostructured material includes: (a) a first nano-network formed from a first set of nanoparticles; and (b) a second nano-network coupled to the first nano-network and formed from a second set of nanoparticles. At least one of the first set of nanoparticles and the second set of nanoparticles are formed from an indirect bandgap material. The nanostructured material is configured to absorb light to produce a first type of charge carrier that is transported in the first nano-network and a second type of charge carrier that is transported in the second nano-network. The nanostructured material has an absorption coefficient that is at least 103 cm−1 within a range of wavelengths from about 400 nm to about 700 nm.
-
Citations
13 Claims
-
1. A nanostructured material, comprising:
-
(a) a first nano-network formed from a plurality of Si quantum dots that are at least one of fused and interconnected; and (b) a second nano-network coupled to said first nano-network and formed from a plurality of Ge quantum dots that are at least one of fused and interconnected, said plurality of Si quantum dots having a first peak size that is from about 1 nm to about 20 nm, said plurality of Ge quantum dots having a second peak size that is greater than said first peak size to define a staggered band offset between said first nano-network and said second nano-network, said nanostructured material being configured to absorb light to produce a first type of charge carrier and a second type of charge carrier, said first type of charge carrier separating into said first nano-network in accordance with said staggered band offset and being-transported in said first nano-network, said second type of charge carrier separating into said second nano-network in accordance with said staggered band offset and being transported in said second nano-network, said nanostructured material having an absorption coefficient that is at least 103 cm−
1 within a range of wavelengths from about 400 nm to about 700 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification