Transformation from a Weak- to Strong-Size Confinement Regime in PbI_2 Ultra-Thin Microcrystallites Embedded in E-MAA Copolymer

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概要

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• Transfortaaation frouaa weak- to strong-size confiraeuauent luas been observed in a tiune-resolvedphotoltrraainescence (PL) of PbI3 trltr?t-tlain nanicrocrystallites eraabedded in ethylene-tnetacrylicacid (E-IV[AA) copo[yuner. At 2 K, there appears 21 PL line that originates frotn an excitouustate boutad to a netrtral donor. The tetaaporal behaxzior of the PL intensity ltas txvo exponentialdecay cotauponents. In taaicrocryst?tl1ites that are tlaicker than 5 1;tyers, the dec;t)' titaae of' thesloxv contponent (r.)...) becoraaes longer as Clue tlaickness decreases and hats a nuaxiraattraa xxaltre ;ttarotrnd 5 layers. The decay tiraae decrearses xvith ['trrt1aer decrease in thickness. Tlae tlaicknessdependence of r.).- XV2lS explained both by 21 gistnt oscillator strengtla of the botznd exciton andby shrinkage of' the exciton W2lX7C function.

• 社団法人日本物理学会の論文
• 1998-06-15

著者

• Nakahara H

  Department Of Chemistry Tokyo Metropolitan University

• Yamamoto Aishi

  Department Of Physics Graduate School Of Science Tohoku University

• Nakahara Hisashi

  Department Of Geophysics Graduate School Of Science Tohoku University

• Goto Takenari

  Department Of Physics Faculty Of Science Tohoku University

• YOSHIHARA Masanori

  Department of Physics,Graduate School of Science,Tohoku University

• Yoshihara Masanori

  Department Of Physics Graduate School Of Science Tohoku University

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