Search: onr:"swepub:oai:DiVA.org:liu-199542" >
How Photogenerated ...
-
Zhou, YangIst Italiano Tecnol, Italy
(author)
How Photogenerated I2 Induces I-Rich Phase Formation in Lead Mixed Halide Perovskites
- Article/chapterEnglish2023
Publisher, publication year, extent ...
-
2023
-
WILEY-V C H VERLAG GMBH,2023
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:liu-199542
-
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-199542URI
-
https://doi.org/10.1002/adma.202305567DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Funding Agencies|ERC; European Unions Horizon 2020 research and innovation programme via the MSCA-IF [839480, 101023689, MSCA-ITN SMART-X, 860553]; European Unions HOrizon Europe reserach and innovation programme [101082176-VALHALLA]; Netherlands Ministry of Education, Culture and Science [024.001.035]; Netherlands Organization for Scientific Research via a Spinoza grant; [771528]
-
Bandgap tunability of lead mixed halide perovskites (LMHPs) is a crucial characteristic for versatile optoelectronic applications. Nevertheless, LMHPs show the formation of iodide-rich (I-rich) phase under illumination, which destabilizes the semiconductor bandgap and impedes their exploitation. Here, it is shown that how I-2, photogenerated upon charge carrier trapping at iodine interstitials in LMHPs, can promote the formation of I-rich phase. I-2 can react with bromide (Br-) in the perovskite to form a trihalide ion I2Br- (I delta--I delta+-Br delta-), whose negatively charged iodide (I delta-) can further exchange with another lattice Br- to form the I-rich phase. Importantly, it is observed that the effectiveness of the process is dependent on the overall stability of the crystalline perovskite structure. Therefore, the bandgap instability in LMHPs is governed by two factors, i.e., the density of native defects leading to I-2 production and the Br- binding strength within the crystalline unit. Eventually, this study provides rules for the design of chemical composition in LMHPs to reach their full potential for optoelectronic devices.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
van Laar, Simone C. W.Eindhoven Univ Technol, Netherlands
(author)
-
Meggiolaro, DanieleIst CNR Sci & Tecnol Chim Giulio Natta CNR SCITEC, Italy
(author)
-
Gregori, LucaIst CNR Sci & Tecnol Chim Giulio Natta CNR SCITEC, Italy; Univ Perugia, Italy; INSTM, Italy
(author)
-
Martani, SamueleIst Italiano Tecnol, Italy
(author)
-
Heng, Jia-YongChinese Univ Hong Kong, Peoples R China
(author)
-
Datta, KunalMolecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
(author)
-
Jimenez-Lopez, JesusIst Italiano Tecnol, Italy
(author)
-
Wang, FengLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)fenwa69
(author)
-
Wong, E. LaineIst Italiano Tecnol, Italy
(author)
-
Poli, IsabellaIst Italiano Tecnol, Italy
(author)
-
Treglia, AntonellaIst Italiano Tecnol, Italy
(author)
-
Cortecchia, DanieleIst Italiano Tecnol, Italy
(author)
-
Prato, MirkoIst Italiano Tecnol, Italy
(author)
-
Kobera, LiborCzech Acad Sci, Czech Republic
(author)
-
Gao, FengLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)fenga88
(author)
-
Zhao, NiChinese Univ Hong Kong, Peoples R China
(author)
-
Janssen, Rene A. J.Eindhoven Univ Technol, Netherlands
(author)
-
De Angelis, FilippoIst CNR Sci & Tecnol Chim Giulio Natta CNR SCITEC, Italy; Univ Perugia, Italy; INSTM, Italy; Sungkyunkwan Univ, South Korea
(author)
-
Petrozza, AnnamariaIst Italiano Tecnol, Italy
(author)
-
Ist Italiano Tecnol, ItalyEindhoven Univ Technol, Netherlands
(creator_code:org_t)
Related titles
-
In:Advanced Materials: WILEY-V C H VERLAG GMBH0935-96481521-4095
Internet link
Find in a library
To the university's database
- By the author/editor
-
Zhou, Yang
-
van Laar, Simone ...
-
Meggiolaro, Dani ...
-
Gregori, Luca
-
Martani, Samuele
-
Heng, Jia-Yong
-
show more...
-
Datta, Kunal
-
Jimenez-Lopez, J ...
-
Wang, Feng
-
Wong, E. Laine
-
Poli, Isabella
-
Treglia, Antonel ...
-
Cortecchia, Dani ...
-
Prato, Mirko
-
Kobera, Libor
-
Gao, Feng
-
Zhao, Ni
-
Janssen, Rene A. ...
-
De Angelis, Fili ...
-
Petrozza, Annama ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Chemical Science ...
-
and Physical Chemist ...
- Articles in the publication
-
Advanced Materia ...
- By the university
-
Linköping University