Diameter-Tunable CdSe Nanotubes from Facile Solution-Based Selenization of Cd(OH)2 Nanowire Bundles for Photoelectrochemical Cells
- Diameter-Tunable CdSe Nanotubes from Facile Solution-Based Selenization of Cd(OH)2 Nanowire Bundles for Photoelectrochemical Cells
- 심희상; 신디; 김정원; 구저르; 주오심; 김해진; 김원배
- Issue Date
- Chemistry of materials
- VOL 21, NO 9, 1875-1883
- Diameter-tunable CdSe nanotubes are synthesized via a sacrificial template approach in solution phase
by reacting Cd(OH)2 nanowire bundles with NaHSe. The sacrificial templates of diameter-controlled
Cd(OH)2 nanowire bundles undergo an interdiffusion process between Se2- and Cd2+ species, and
subsequently core/shell structures of Cd(OH)2/CdSe are formed at intermediate states. The crystalline
CdSe hollow nanotubes are finally formed when all Cd reagent sources are chalcogenized with Se in the
solution phase, and their diameter can be readily controlled from ca. 20 to 60 nm depending on the
dimension of nanowire bundle templates. With heat treatment at 300 °C, crystallinity of the CdSe nanotubes
can be enhanced with removal of amorphous selenium present on the nanotube surface, which shows a
photo-conversion efficiency of 0.57% in CdSe/polysulfide liquid-junction solar cell along with a bandgap
energy of 1.89 eV. A possible scheme for the CdSe nanotube synthesis from the template of Cd(OH)2
nanowire bundles is also proposed in this article.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.