Surface Restructuring of Hybrid Perovskite Crystals

Handle URI:
http://hdl.handle.net/10754/622688
Title:
Surface Restructuring of Hybrid Perovskite Crystals
Authors:
Banavoth, Murali ( 0000-0002-7806-2274 ) ; Dey, Sukumar; Abdelhady, Ahmed L.; Peng, Wei ( 0000-0002-7168-9795 ) ; Alarousu, Erkki; Kirmani, Ahmad R. ( 0000-0002-8351-3762 ) ; Cho, Nam Chul; Sarmah, Smritakshi Phukan; Parida, Manas R.; Saidaminov, Makhsud I. ( 0000-0002-3850-666X ) ; Zhumekenov, Ayan A.; Sun, Jingya; Alias, Mohd Sharizal ( 0000-0003-1369-1421 ) ; Yengel, Emre ( 0000-0001-7208-4803 ) ; Ooi, Boon S. ( 0000-0001-9606-5578 ) ; Amassian, Aram ( 0000-0002-5734-1194 ) ; Bakr, Osman M. ( 0000-0002-3428-1002 ) ; Mohammed, Omar F. ( 0000-0001-8500-1130 )
Abstract:
Hybrid perovskite crystals have emerged as an important class of semiconductors because of their remarkable performance in optoelectronics devices. The interface structure and chemistry of these crystals are key determinants of the device's performance. Unfortunately, little is known about the intrinsic properties of the surfaces of perovskite materials because extrinsic effects, such as complex microstructures, processing conditions, and hydration under ambient conditions, are thought to cause resistive losses and high leakage current in solar cells. We reveal the intrinsic structural and optoelectronic properties of both pristinely cleaved and aged surfaces of single crystals. We identify surface restructuring on the aged surfaces (visualized on the atomic-scale by scanning tunneling microscopy) that lead to compositional and optical bandgap changes as well as degradation of carrier dynamics, photocurrent, and solar cell device performance. The insights reported herein clarify the key variables involved in the performance of perovskite-based solar cells and fabrication of high-quality surface single crystals, thus paving the way toward their future exploitation in highly efficient solar cells.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Photonics Laboratory
Citation:
Murali B, Dey S, Abdelhady AL, Peng W, Alarousu E, et al. (2016) Surface Restructuring of Hybrid Perovskite Crystals. ACS Energy Letters 1: 1119–1126. Available: http://dx.doi.org/10.1021/acsenergylett.6b00517.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Energy Letters
Issue Date:
7-Nov-2016
DOI:
10.1021/acsenergylett.6b00517
Type:
Article
ISSN:
2380-8195; 2380-8195
Sponsors:
King Abdullah University of Science and Technology (KAUST) supported the work reported here. The authors gratefully acknowledge funding support from KAUST and from King Abdul-Aziz City for Science and Technology, Technology Innovation Center for Solid-State Lighting at KAUST. We also acknowledge Ahmed M. El-Zohry and Chen Yang for their help in the discussions related to reabsorption and crystal synthesis.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acsenergylett.6b00517
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Photonics Laboratory; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorBanavoth, Muralien
dc.contributor.authorDey, Sukumaren
dc.contributor.authorAbdelhady, Ahmed L.en
dc.contributor.authorPeng, Weien
dc.contributor.authorAlarousu, Erkkien
dc.contributor.authorKirmani, Ahmad R.en
dc.contributor.authorCho, Nam Chulen
dc.contributor.authorSarmah, Smritakshi Phukanen
dc.contributor.authorParida, Manas R.en
dc.contributor.authorSaidaminov, Makhsud I.en
dc.contributor.authorZhumekenov, Ayan A.en
dc.contributor.authorSun, Jingyaen
dc.contributor.authorAlias, Mohd Sharizalen
dc.contributor.authorYengel, Emreen
dc.contributor.authorOoi, Boon S.en
dc.contributor.authorAmassian, Aramen
dc.contributor.authorBakr, Osman M.en
dc.contributor.authorMohammed, Omar F.en
dc.date.accessioned2017-01-12T13:01:27Z-
dc.date.available2017-01-12T13:01:27Z-
dc.date.issued2016-11-07en
dc.identifier.citationMurali B, Dey S, Abdelhady AL, Peng W, Alarousu E, et al. (2016) Surface Restructuring of Hybrid Perovskite Crystals. ACS Energy Letters 1: 1119–1126. Available: http://dx.doi.org/10.1021/acsenergylett.6b00517.en
dc.identifier.issn2380-8195en
dc.identifier.issn2380-8195en
dc.identifier.doi10.1021/acsenergylett.6b00517en
dc.identifier.urihttp://hdl.handle.net/10754/622688-
dc.description.abstractHybrid perovskite crystals have emerged as an important class of semiconductors because of their remarkable performance in optoelectronics devices. The interface structure and chemistry of these crystals are key determinants of the device's performance. Unfortunately, little is known about the intrinsic properties of the surfaces of perovskite materials because extrinsic effects, such as complex microstructures, processing conditions, and hydration under ambient conditions, are thought to cause resistive losses and high leakage current in solar cells. We reveal the intrinsic structural and optoelectronic properties of both pristinely cleaved and aged surfaces of single crystals. We identify surface restructuring on the aged surfaces (visualized on the atomic-scale by scanning tunneling microscopy) that lead to compositional and optical bandgap changes as well as degradation of carrier dynamics, photocurrent, and solar cell device performance. The insights reported herein clarify the key variables involved in the performance of perovskite-based solar cells and fabrication of high-quality surface single crystals, thus paving the way toward their future exploitation in highly efficient solar cells.en
dc.description.sponsorshipKing Abdullah University of Science and Technology (KAUST) supported the work reported here. The authors gratefully acknowledge funding support from KAUST and from King Abdul-Aziz City for Science and Technology, Technology Innovation Center for Solid-State Lighting at KAUST. We also acknowledge Ahmed M. El-Zohry and Chen Yang for their help in the discussions related to reabsorption and crystal synthesis.en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acsenergylett.6b00517en
dc.rightsThis is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.en
dc.rights.urihttp://pubs.acs.org/page/policy/authorchoice_termsofuse.htmlen
dc.titleSurface Restructuring of Hybrid Perovskite Crystalsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentPhotonics Laboratoryen
dc.identifier.journalACS Energy Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionNanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italyen
kaust.authorBanavoth, Muralien
kaust.authorDey, Sukumaren
kaust.authorPeng, Weien
kaust.authorAlarousu, Erkkien
kaust.authorKirmani, Ahmad R.en
kaust.authorCho, Nam Chulen
kaust.authorSarmah, Smritakshi Phukanen
kaust.authorParida, Manas R.en
kaust.authorSaidaminov, Makhsud I.en
kaust.authorZhumekenov, Ayan A.en
kaust.authorSun, Jingyaen
kaust.authorAlias, Mohd Sharizalen
kaust.authorYengel, Emreen
kaust.authorOoi, Boon S.en
kaust.authorAmassian, Aramen
kaust.authorBakr, Osman M.en
kaust.authorMohammed, Omar F.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.