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Modulation of Defects in Semiconductors by Facile and Controllable Reduction: The Case of p-type CuCrO2 Nanoparticles
- Source :
- Inorganic Chemistry, Inorganic Chemistry, American Chemical Society, 2016, 55 (15), pp.7729-7733. ⟨10.1021/acs.inorgchem.6b01169⟩
- Publication Year :
- 2016
- Publisher :
- American Chemical Society (ACS), 2016.
-
Abstract
- Optical and electrical characteristics of solid materials are well-known to be intimately related to the presence of intrinsic or extrinsic defects. Hence, the control of defects in semiconductors is of great importance to achieve specific properties, for example, transparency and conductivity. Herein, a facile and controllable reduction method for modulating the defects is proposed and used for the case of p-type delafossite CuCrO2 nanoparticles. The optical absorption in the infrared region of the CuCrO2 material can then be fine-tuned via the continuous reduction of nonstoichiometric Cu(II), naturally stabilized in small amounts. This reduction modifies the concentration of positive charge carriers in the material, and thus the conductive and reflective properties, as well as the flat band potential. Indeed, this controllable reduction methodology provides a novel strategy to modulate the (opto-) electronic characteristics of semiconductors.
- Subjects :
- Chemistry
business.industry
Nanoparticle
Nanotechnology
02 engineering and technology
engineering.material
Conductivity
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Inorganic Chemistry
Reduction (complexity)
Delafossite
Semiconductor
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
engineering
Charge carrier
Physical and Theoretical Chemistry
0210 nano-technology
Absorption (electromagnetic radiation)
business
Electrical conductor
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- ISSN :
- 1520510X and 00201669
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- Inorganic Chemistry
- Accession number :
- edsair.doi.dedup.....27a1377b43958ad5ffabe93140dbba2f
- Full Text :
- https://doi.org/10.1021/acs.inorgchem.6b01169