Graphene-Templated Achiral Hybrid Perovskite for Circularly Polarized Light Sensing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00599061" target="_blank" >RIV/61388955:_____/24:00599061 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0356623" target="_blank" >https://hdl.handle.net/11104/0356623</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsami.4c10289" target="_blank" >10.1021/acsami.4c10289</a>
Alternative languages
Result language
angličtina
Original language name
Graphene-Templated Achiral Hybrid Perovskite for Circularly Polarized Light Sensing
Original language description
This study points out the importance of the templating effect in hybrid organic-inorganic perovskite semiconductors grown on graphene. By combining two achiral materials, we report the formation of a chiral composite heterostructure with electronic band splitting. The effect is observed through circularly polarized light emission and detection in a graphene/alpha-CH(NH2)(2)PbI3 perovskite composite, at ambient temperature and without a magnetic field. We exploit the spin-charge conversion by introducing an unbalanced spin population through polarized light that gives rise to a spin photoconductive effect rationalized by Rashba-type coupling. The prepared composite heterostructure exhibits a circularly polarized photoluminescence anisotropy g(CPL) of similar to 0.35 at similar to 2.54 x 10(3) W cm(-2) confocal power density of 532 nm excitation. A carefully engineered interface between the graphene and the perovskite thin film enhances the Rashba field and generates the built-in electric field responsible for photocurrent, yielding a photoresponsivity of similar to 10(5) A W-1 under similar to 0.08 mu W cm(-2) fluence of visible light photons. The maximum photocurrent anisotropy factor g(ph) is similar to 0.51 under similar to 0.16 mu W cm(-2) irradiance. The work sheds light on the photophysical properties of graphene/perovskite composite heterostructures, finding them to be a promising candidate for developing miniaturized spin-photonic devices.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/8F21009" target="_blank" >8F21009: Perovskites Quantum Dots based Broadband Detectors – from a quantum dot to a functional detector</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Applied Materials and Interfaces
ISSN
1944-8244
e-ISSN
1944-8252
Volume of the periodical
16
Issue of the periodical within the volume
39
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
52789-52798
UT code for WoS article
001317109800001
EID of the result in the Scopus database
2-s2.0-85204643049