Ultralong Radiative States in Hybrid Perovskite Crystals: Compositions for Submillimeter Diffusion Lengths

Handle URI:
http://hdl.handle.net/10754/626003
Title:
Ultralong Radiative States in Hybrid Perovskite Crystals: Compositions for Submillimeter Diffusion Lengths
Authors:
Alarousu, Erkki; El-Zohry, Ahmed M. ( 0000-0003-2901-5815 ) ; Yin, Jun; Zhumekenov, Ayan A.; Yang, Chen; Alhabshi, Esra; Gereige, Issam; AlSaggaf, Ahmed; Malko, Anton V. ( 0000-0001-6410-7112 ) ; Bakr, Osman M. ( 0000-0002-3428-1002 ) ; Mohammed, Omar F. ( 0000-0001-8500-1130 )
Abstract:
Organic-inorganic hybrid perovskite materials have recently evolved into the leading candidate solution-processed semiconductor for solar cells due to their combination of desirable optical and charge transport properties. Chief among these properties is the long carrier diffusion length, which is essential to optimizing the device architecture and performance. Herein, we used time-resolved photoluminescence (at low excitation fluence, 10.59 μJ·cm upon two-photon excitation), which is the most accurate and direct approach to measure the radiative charge carrier lifetime and diffusion lengths. Lifetimes of about 72 and 4.3 μs for FAPbBr and FAPbI perovskite single crystals have been recorded, presenting the longest radiative carrier lifetimes reported to date for perovskite materials. Subsequently, carrier diffusion lengths of 107.2 and 19.7 μm are obtained. In addition, we demonstrate the key role of the organic cation units in modulating the carrier lifetime and its diffusion lengths, in which the defect formation energies for FA cations are much higher than those with the MA ones.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; KAUST Catalysis Center (KCC)
Citation:
Alarousu E, El-Zohry AM, Yin J, Zhumekenov AA, Yang C, et al. (2017) Ultralong Radiative States in Hybrid Perovskite Crystals: Compositions for Submillimeter Diffusion Lengths. The Journal of Physical Chemistry Letters 8: 4386–4390. Available: http://dx.doi.org/10.1021/acs.jpclett.7b01922.
Publisher:
American Chemical Society (ACS)
Journal:
The Journal of Physical Chemistry Letters
Issue Date:
29-Aug-2017
DOI:
10.1021/acs.jpclett.7b01922
Type:
Article
ISSN:
1948-7185
Sponsors:
The authors gratefully acknowledge funding support from KAUST, Saudi Aramco, and Technology Innovation Center for Solid-State Lighting at KAUST. A.V.M. gratefully acknowledges the support from CRDF Global.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.7b01922
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAlarousu, Erkkien
dc.contributor.authorEl-Zohry, Ahmed M.en
dc.contributor.authorYin, Junen
dc.contributor.authorZhumekenov, Ayan A.en
dc.contributor.authorYang, Chenen
dc.contributor.authorAlhabshi, Esraen
dc.contributor.authorGereige, Issamen
dc.contributor.authorAlSaggaf, Ahmeden
dc.contributor.authorMalko, Anton V.en
dc.contributor.authorBakr, Osman M.en
dc.contributor.authorMohammed, Omar F.en
dc.date.accessioned2017-10-30T08:39:49Z-
dc.date.available2017-10-30T08:39:49Z-
dc.date.issued2017-08-29en
dc.identifier.citationAlarousu E, El-Zohry AM, Yin J, Zhumekenov AA, Yang C, et al. (2017) Ultralong Radiative States in Hybrid Perovskite Crystals: Compositions for Submillimeter Diffusion Lengths. The Journal of Physical Chemistry Letters 8: 4386–4390. Available: http://dx.doi.org/10.1021/acs.jpclett.7b01922.en
dc.identifier.issn1948-7185en
dc.identifier.doi10.1021/acs.jpclett.7b01922en
dc.identifier.urihttp://hdl.handle.net/10754/626003-
dc.description.abstractOrganic-inorganic hybrid perovskite materials have recently evolved into the leading candidate solution-processed semiconductor for solar cells due to their combination of desirable optical and charge transport properties. Chief among these properties is the long carrier diffusion length, which is essential to optimizing the device architecture and performance. Herein, we used time-resolved photoluminescence (at low excitation fluence, 10.59 μJ·cm upon two-photon excitation), which is the most accurate and direct approach to measure the radiative charge carrier lifetime and diffusion lengths. Lifetimes of about 72 and 4.3 μs for FAPbBr and FAPbI perovskite single crystals have been recorded, presenting the longest radiative carrier lifetimes reported to date for perovskite materials. Subsequently, carrier diffusion lengths of 107.2 and 19.7 μm are obtained. In addition, we demonstrate the key role of the organic cation units in modulating the carrier lifetime and its diffusion lengths, in which the defect formation energies for FA cations are much higher than those with the MA ones.en
dc.description.sponsorshipThe authors gratefully acknowledge funding support from KAUST, Saudi Aramco, and Technology Innovation Center for Solid-State Lighting at KAUST. A.V.M. gratefully acknowledges the support from CRDF Global.en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acs.jpclett.7b01922en
dc.titleUltralong Radiative States in Hybrid Perovskite Crystals: Compositions for Submillimeter Diffusion Lengthsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.identifier.journalThe Journal of Physical Chemistry Lettersen
dc.contributor.institutionSaudi Aramco Research & Development Center, Dhahran 31311, Kingdom of Saudi Arabiaen
dc.contributor.institutionDepartment of Physics, The University of Texas at Dallas, Richardson, Texas 75080, United Statesen
dc.contributor.institutionDepartment of Physics, The University of Texas at Dallas, Richardson, Texas 75080, United Statesen
kaust.authorAlarousu, Erkkien
kaust.authorEl-Zohry, Ahmed M.en
kaust.authorYin, Junen
kaust.authorZhumekenov, Ayan A.en
kaust.authorYang, Chenen
kaust.authorBakr, Osman M.en
kaust.authorMohammed, Omar F.en
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