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086 0 |a E 1.99:1803092 
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245 0 0 |a Nanoshell quantum dots  |h [electronic resource] :  |b Quantum confinement beyond the exciton Bohr radius. 
260 |a Washington, D.C. :  |b United States. Department of Energy. Office of Science ;  |a Oak Ridge, Tenn. :  |b Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,  |c 2020. 
300 |a Size: Article No. 110902 :  |b digital, PDF file. 
336 |a text  |b txt  |2 rdacontent. 
337 |a computer  |b c  |2 rdamedia. 
338 |a online resource  |b cr  |2 rdacarrier. 
500 |a Published through Scitech Connect. 
500 |a 03/21/2020. 
500 |a "Journal ID: ISSN 0021-9606." 
500 |a ": US2212555." 
500 |a Cassidy, James ; Zamkov, Mikhail ;  
500 |a Bowling Green State Univ., OH (United States) 
520 3 |a Nanoshell quantum dots (QDs) represent a novel class of colloidal semiconductor nanocrystals (NCs), which supports tunable optoelectronic properties over the extended range of particle sizes. Traditionally, the ability to control the bandgap of colloidal semiconductor NCs is limited to small-size nanostructures, where photoinduced charges are confined by Coulomb interactions. A notorious drawback of such a restricted size range concerns the fact that assemblies of smaller nanoparticles tend to exhibit a greater density of interfacial and surface defects. This presents a potential problem for device applications of semiconductor NCs where the charge transport across nanoparticle films is important, as in the case of solar cells, field-effect transistors, and photoelectrochemical devices. Furthermore, the morphology of nanoshell QDs addresses this issue by enabling the quantum-confinement in the shell layer, where two-dimensional excitons can exist, regardless of the total particle size. Such a geometry exhibits one of the lowest surface-to-volume ratios among existing QD architectures and, therefore, could potentially lead to improved charge-transport and multi-exciton characteristics. The expected benefits of the nanoshell architecture were recently demonstrated by a number of reports on the CdS<sub>bulk</sub>/CdSe nanoshell model system, showing an improved photoconductivity of solids and increased lifetime of multi-exciton populations. Along these lines, this perspective will summarize the recent work on CdS<sub>bulk</sub>/CdSe nanoshell colloids and discuss the possibility of employing other nanoshell semiconductor combinations in light-harvesting and lasing applications. 
536 |b SC0016872. 
536 |b DMR-1710063. 
536 |b SC0026872 (MZ) 
650 7 |a 37 inorganic, organic, physical, and analytical chemistry  |2 local. 
650 7 |a Charge transport  |2 local. 
650 7 |a Excitons  |2 local. 
650 7 |a Photoconductivity  |2 local. 
650 7 |a Quantum confinement  |2 local. 
650 7 |a Nanomaterials  |2 local. 
650 7 |a Quantum dots  |2 local. 
650 7 |a Chemical properties  |2 local. 
650 7 |a Field effect transistors  |2 local. 
650 7 |a Nanoparticles  |2 local. 
650 7 |a Et al  |2 local. 
650 7 |a Inorganic, organic, physical, and analytical chemistry  |2 local. 
710 1 |a United States.  |b Department of Energy.  |b Office of Science.  |4 spn. 
710 2 |a National Science Foundation (U.S.).  |4 spn. 
710 1 |a United States.  |b Department of Energy.  |b Chicago Operations Office.  |f res. 
710 1 |a United States.  |b Department of Energy.  |b Office of Scientific and Technical Information  |4 dst. 
856 4 0 |u https://www.osti.gov/servlets/purl/1803092  |z Full Text (via OSTI) 
907 |a .b128297931  |b 02-28-23  |c 12-08-22 
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952 f f |p Can circulate  |a University of Colorado Boulder  |b Online  |c Online  |d Online  |e E 1.99:1803092  |h Superintendent of Documents classification  |i web  |n 1