Surface Termination-Dependent Nanotribological Properties of Single-Crystal MAPbBr(3) Surfaces

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Fältnamn	Indikatorer	Metadata
000		03039naa a2200397 4500
001		oai:DiVA.org:kau-83174
003		SwePub
008		210222s2020 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-831742 URI
024	7	a https://doi.org/10.1021/acs.jpcc.9b101912 DOI
040		a (SwePub)kau
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Choi, Joong Il Jakeu Institute for Basic Science, KOR4 aut
245	1 0	a Surface Termination-Dependent Nanotribological Properties of Single-Crystal MAPbBr(3) Surfaces
264		c 2019-12-17
264	1	b AMER CHEMICAL SOC,c 2020
338		a print2 rdacarrier
520		a Atomistic characterization of surface termination and the corresponding mechanical properties of single-crystal methylammonium lead tribromide (MAPbBr(3)) are performed using combined atomic force microscopy (AFM) measurements and density functional theory (DFT) calculations. A clean MAPbBr(3) surface is obtained by in situ cleavage in ultrahigh vacuum at room temperature, and the subsequent AFM measurements of the as-cleaved MAPbBr(3) exhibit the coexistence of two different surface terrace types with step height differences corresponding to about half the thickness of a PbI6 octahedron layer. Concurrent friction force microscopy measurements show that the two surfaces result in two distinct friction values. Based on DFT calculations, we attribute the higher-friction and lower-friction surfaces to MABr-terminated flat and PbBr2-terminated vacant surface terminations, respectively. The calculated electronic band structures of the various MABr- and PbBr2-terminated surfaces show that the midgap states are absent, revealing the defect-tolerant nature of the ideal single-crystal MAPbBr(3) surfaces.
650	7	a TEKNIK OCH TEKNOLOGIERx Materialteknik0 (SwePub)2052 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Materials Engineering0 (SwePub)2052 hsv//eng
653		a Materialteknik
653		a Materials Engineering
700	1	a Khan, Muhammad Ejazu KAIST, KOR;National University of Technology, PAK4 aut
700	1	a Hawash, Zaferu Okinawa Institute of Science and Technology, JPN4 aut0 (Swepub:kau)zafehawa
700	1	a Lee, Hyunhwau Institute for Basic Science, KOR; KAIST, KOR4 aut
700	1	a Ono, Luis K.u Okinawa Institute of Science and Technology, JPN4 aut
700	1	a Qi, Yabingu Okinawa Institute of Science and Technology Graduate University, JPN4 aut
700	1	a Kim, Yong-Hoonu KAIST, KOR4 aut
700	1	a Park, Jeong Youngu Institute for Basic Science, KOR4 aut
710	2	a Institute for Basic Science, KORb KAIST, KOR;National University of Technology, PAK4 org
773	0	t The Journal of Physical Chemistry Cd : AMER CHEMICAL SOCg 124:2, s. 1484-1491q 124:2<1484-1491x 1932-7447x 1932-7455
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-83174
856	4 8	u https://doi.org/10.1021/acs.jpcc.9b10191

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