Researcher Database

HIRAI Takeshi

Department / Course College of Science and Engineering Department of Physical Sciences

Title / Position Lecturer

Papers
1.	2013	Energy transfer from CsI host lattice to Ag^- centers in CsI:Ag^- crystals │ Optical Materials │ 35,pp.1257-1260 (Co-authored)
2.	2012	Luminescence properties of KCl:Ag^- crystals excited near the fundamental absorption edge │ Journal of Luminescence │ 132,pp.513-516 (Co-authored)
3.	2012	Room-temperature lasing from fluorene thin-film crystals densely doped with anthracene │ Optics Letters │ 37,pp.4880-4882 (Co-authored)
4.	2011	Emission spectroscopy of divalent-cation-doped GaN photocatalysts │ Journal of Applied Physics │ 110,pp.113526-1-113526-7 (Co-authored)
5.	2011	Potentiostatic electrodeposition of cuprous oxide thin films for photovoltaic applications │ Electrochimica Acta │ 56,pp.4882-4888 (Co-authored)
6.	2011	Stimulated emission from anthracene aggregates in fluorene crystals fabricated by cell method │ Physica Status Solidi C │ 8,pp.128-131 (Co-authored)
7.	2010	Photoluminescence Spectroscopic and Computational Investigation of the Origin of the Visible Light Response of (Ga_1-xZn_x)(N_1-xO_x) Photocatalyst for Overall Water Splitting │ The Journal of Physical Chemistry C │ 114,pp.15510-15515 (Co-authored)
8.	2009	Electrochemical Grooving of Si Wafers Using Catalytic Wire Electrodes in HF Solution │ Journal of The Electrochemical Society │ 156,pp.H134-H137 (Co-authored)
9.	2009	Optical properties of anthracene-fluorene mixed crystals fabricated by cell method │ physica status solidi (c) │ 6,pp.228-231 (Co-authored)
10.	2009	Thermal quenching of electroluminescence assisted by an electric field in thin films of tris-(8-hydroxyquinolinato) aluminum (III) │ Journal of Luminescence │ 129,pp.406-409 (Co-authored)
11.	2008	Spatially resolved cathodoluminescence spectra of excitons in a ZnO microparticle │ Applied Physics Letters │ 93,pp.041113-1-041113-3 (Co-authored)
12.	2007	4f-5d absorption of gadolinium ions in sodium gadolinium tetrafluorides │ Chemical Physics Letters │ 446,pp.138-141 (Co-authored)
13.	2007	Exciton Annihilation in ZnO Ultrafine Particles with Size of 10-40 nm │ Japanese Journal of Applied Physics │ 46 (21),pp.L522-L524 (Co-authored)
14.	2007	Optical properties of Bi³⁺ ions doped in NaYF₄ │ Journal of Luminescence │ 122-123,pp.149-151 (Co-authored)
15.	2007	Origin of Visible Light Absorption in GaN-Rich (Ga_1-xZn_x)(N_1-xO_x) Photocatalysts │ The Journal of Physical Chemistry C │ 111,pp.18853-18855 (Co-authored)
16.	2007	Transfer of Excitation Energy from Pr³⁺ to Gd³⁺ in YF₃:Pr³⁺,Gd³⁺ │ Japanese Journal of Applied Physics │ 46 (2),pp.660-663 (Co-authored)
17.	2006	Exciton luminescence of ZnO fine particles │ physica status solidi (c) │ 3,pp.3565-3568 (Co-authored)
18.	2006	Luminescence of NaGdF₄:Tb³⁺, Eu³⁺ under vacuum ultraviolet excitation │ Journal of Alloys and Compounds │ 408-412,pp.894-897 (Co-authored)
19.	2006	Luminescence properties of Tl⁺ centers doped in KH₂PO₄ │ physica status solidi (c) │ 3,pp.3607-3610 (Co-authored)
20.	2006	Nano-scale distribution of ZnO free exciton luminescence in ZnO:Zn microcrystals and its modification under electron beam excitation │ Journal of Physics: Condensed Matter │ 18,pp.894-897 (Co-authored)
21.	2005	Luminescence of bound excitons in ZnO:Zn phosphor powders │ Journal of Luminescence │ 113,pp.115-120 (Co-authored)
22.	2005	Luminescence of excitons in mesoscopic ZnO particles │ Journal of Luminescence │ 112,pp.196-199 (Co-authored)
23.	2004	Dynamical behavior of quantum cutting in alkali gadolinium fluoride phosphors │ Journal of Luminescence │ 108,pp.59-63 (Co-authored)
24.	2003	Energy migration and relaxation through Gd³⁺ sublattice in NaGdF₄ │ Journal of Luminescence │ 102-103,pp.727-732 (Co-authored)
25.	2001	Energy transfer through Gd³⁺ sublattice in the fluoride phosphors │ Journal of Luminescence │ 94-95,pp.311-315 (Co-authored)
26.	2001	Excitons in colloidal CuI particles dispersed in a KI crystal │ International Journal of Modern Physics B │ 5 (28, 29 & 30),pp.3789-3792 (Co-authored)
27.	2001	Lifetimes of excitons in ZnO fine particles dispersed in alkali halide crystals │ Journal of Luminescence │ 94-95,pp.261-265 (Co-authored)
28.	1998	Optical and x-ray studies of thin mixed crystals of NaCl-typed RbI and CsCl-typed CsI │ The Journal of Chemical Physics │ 109 (5),pp.1863-1866 (Co-authored)