Cation-Exchange-Derived Wurtzite HgTe Nanorods for Sensitive Photodetection in the Short-Wavelength Infrared Range
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F23%3A10254134" target="_blank" >RIV/61989100:27740/23:10254134 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.chemmater.3c01144" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.chemmater.3c01144</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.chemmater.3c01144" target="_blank" >10.1021/acs.chemmater.3c01144</a>
Alternative languages
Result language
angličtina
Original language name
Cation-Exchange-Derived Wurtzite HgTe Nanorods for Sensitive Photodetection in the Short-Wavelength Infrared Range
Original language description
HgTe nanocrystals are one of the most promising candidatesforoptoelectronic applications in short- and middle-range infrared wavelengthregions. Fabrication of one-dimensional anisotropic HgTe nanoparticleswith a wurtzite structure has been a challenging task, so far. Weintroduce a two-step cation-exchange strategy to synthesize wurtzite-phaseHgTe nanorods, starting from CdTe nanorods and proceeding throughthe formation of a Cu2-x Te intermediate.We demonstrate a means to tune the residual Cu content in the finalHgTe nanorods from tens to less than one at % by adjusting the oleylamineand N,N-dimethylethylenediamineconcentrations used during the Cu-to-Hg cation-exchange step. Thephotoluminescence peak position of the HgTe nanorods is tunable inthe broad spectral range from 1500 to 2500 nm with the decrease ofthe residual Cu content. Field-effect transistors based on fabricatedHgTe nanorods show favorable transport characteristics, namely, holemobilities up to 10(-2) cm(2)V(-1) s(-1) and on/off current ratio up to 10(3). The responsivity of photodetectors based on HgTe nanorods at 1340nm reaches 1 A/W, and the detectivity is up to 10(10) Jonesfor the devices with a simple planar geometry. Results presented hereindicate wide prospects for exploring the electronic properties ofwurtzite HgTe nanorods, as well as cation-doping and ligand surfacepassivation effects on device performance, which is of great importancefor the field of modern optoelectronics.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
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Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemistry of Materials
ISSN
0897-4756
e-ISSN
1520-5002
Volume of the periodical
35
Issue of the periodical within the volume
14
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
5631-5639
UT code for WoS article
001024281600001
EID of the result in the Scopus database
2-s2.0-85165680739