Near‐infrared light‐responsive Cu‐doped Cs2AgBiBr6
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F20%3A00536344" target="_blank" >RIV/61389013:_____/20:00536344 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/10.1002/adfm.202005521" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/adfm.202005521</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adfm.202005521" target="_blank" >10.1002/adfm.202005521</a>
Alternative languages
Result language
angličtina
Original language name
Near‐infrared light‐responsive Cu‐doped Cs2AgBiBr6
Original language description
Lead‐free halide double perovskites (A2BIBIIIX6) with attractive optical and electronic features are considered to be a promising candidate to overcome the toxicity and stability issues of lead halide perovskites (APbX3). However, their poor absorption profiles limit device performance. Here the absorption band edge of Cs2AgBiBr6 double perovskite to the near‐infrared range is significantly broadened by developing doped double perovskites, Cs2(Ag:Cu)BiBr6. The partial replacement of Ag ions by Cu ions in the crystal lattice is confirmed by the X‐ray photoelectron spectroscopy (XPS) and solid‐state nuclear magnetic resonance (ssNMR) measurements. Cu doping barely affects the bandgap of Cs2AgBiBr6, instead it introduces subbandgap states with strong absorption to the near‐infrared range. More interestingly, the near‐infrared absorption can generate band carriers upon excitation, as indicated by the photoconductivity measurement. This work sheds new light on the absorption modulation of halide double perovskites for future efficient optoelectronic devices.
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
10406 - Analytical chemistry
Result continuities
Project
<a href="/en/project/GA19-05259S" target="_blank" >GA19-05259S: Combining advanced ultra-wideline ssNMR spectroscopy with XRPD and Computational Chemistry to study organo-metallic and frameworks materials</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Functional Materials
ISSN
1616-301X
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
51
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
1-7
UT code for WoS article
000570170300001
EID of the result in the Scopus database
2-s2.0-85091004042