論文 - 宇佐美 徳隆
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Temperature dependent Al-induced crystallization of amorphous Ge thin films on SiO2 substrates
K.Toko, N.Fukata, K.Nakazawa, M.Kurosawa, N.Usami, M.Miyao, T.Suemasu
JOURNAL OF CRYSTAL GROWTH 372 巻 頁： 189-192 2013年6月
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Effect of Ga content and growth temperature on Cu(In,Ga)Se2 thin film deposited on heat-resistant glass substrates
T.Higuchi, N.Usami, T.Minemoto
Phys.Status Solidi C 10 巻 頁： 1035-1037 2013年5月
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Generation of high photocurrent in three-dimensional silicon quantum dot superlattice fabricated by combining bio-template and neutral beam etching for quantum dot solar cells
M.Igarashi, WG.Hu, M.M.Rahman, N.Usami, S.Samukawa
NANOSCALE RESEARCH LETTERS 8 巻 頁： 228 2013年5月
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Structural study on phosphorus doping of BaSi2 epitaxial films by ion implantation
K.O.Hara, Y.Hoshi, N.Usami, Y.Shiraki, K.Nakamura, K.Toko, T.Suemasu,
THIN SOLID FILMS 534 巻 頁： 470-473 2013年5月
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Effects of crystal defects and their interactions with impurities on electrical properties of multicrystalline Si
S.Joonwichien, S.Matsushima, N.Usami
JOURNAL OF APPLIED PHYSICS 113 巻 ( 13 ) 頁： 133503 2013年4月
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Orientation Control of Large-Grained Si Films on Insulators by Thickness-Modulated Al-Induced Crystallization
R.Numata, K.Toko, N.Saitoh, N.Yoshizawa, N.Usami, T.Suemasu
CRYSTAL GROWTH & DESIGN 13 巻 ( 4 ) 頁： 1767-1770 2013年4月
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In-situ heavily p-type doping of over 10(20) cm(-3) in semiconducting BaSi2 thin films for solar cells applications
M.A.Khan, K.O.Hara, W.Du, M.Baba, K.Nakamura, M.Suzuno, K.Toko, N.Usami, T.Suemasu
APPLIED PHYSICS LETTERS 102 巻 ( 11 ) 頁： 112107 2013年3月
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Lattice and grain-boundary diffusions of boron atoms in BaSi2 epitaxial films on Si(111)
K. Nakamura, M. Baba, M. A. Khan, W. Du, M. Sasase, K. O. Hara, N. Usami, K. Toko and T. Suemasu
Journal of Applied Physics 113 巻 ( 5 ) 2013年2月
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Control of Grain Boundary Propagation in Mono-Like Si: Utilization of Functional Grain Boundaries
K. Kutsukake, N. Usami, Y. Ohno, Y. Tokumoto and I. Yonenaga
Applied Physics Express 6 巻 ( 2 ) 2013年2月
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On the growth mechanism of polycrystalline silicon thin film by Al-induced layer exchange process
N. Usami, M. N. Jung and T. Suemasu
Journal of Crystal Growth 362 巻 頁： 16-19 2013年1月
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Effects of formation of mini-bands in two-dimensional array of silicon nanodisks with SiC interlayer for quantum dot solar cells
M. Igarashi, M. F. Budiman, W. G. Pan, W. G. Hu, Y. Tamura, M. E. Syazwan, N. Usami and S. Samukawa
Nanotechnology 24 巻 ( 1 ) 2013年1月
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Formation of compressively strained Si/S1-xCx/Si(100) heterostructures using gas-source molecular beam epitaxy
K. Arimoto, H. Furukawa, J. Yamanaka, C. Yamamoto, K. Nakagawa, N. Usami, K. Sawano and Y. Shiraki
Journal of Crystal Growth 362 巻 頁： 276-281 2013年1月
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Reflectance anisotropies of compressively strained Si grown on vicinal Si1-xCx(001)
R. E. Balderas-Navarro, N. A. Ulloa-Castillo, K. Arimoto, G. Ramirez-Melendez, L. F. Lastras-Martinez, H. Furukawa, J. Yamanaka, A. Lastras-Martinez, J. M. Flores-Camacho, N. Usami, D. Stifter and K. Hingerl
Applied Physics Letters 102 巻 ( 1 ) 2013年1月
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Evaluation of potential variations around grain boundaries in BaSi2 epitaxial films by Kelvin probe force microscopy
M.Baba, S.Tsurekawa, K.Watanabe, W.Du, K.Toko, K.O.Hara, N.Usami, T.Sekiguchi and T.Suemasu
Applied Physics Letters 103 巻 頁： 142113 2013年
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Theory of open-circuit voltage and the driving force of charge separation in pn-junction solar cells
K.O. Hara, N.Usami
Journal of Applied Physics 114 巻 ( 15 ) 頁： 153101 2013年
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Silicon-Based Light-Emitting Devices Based on Ge Self-Assembled Quantum Dots Embedded in Optical Cavities
X. J. Xu, S. Narusawa, T. Chiba, T. Tsuboi, J. S. Xia, N. Usami, T. Maruizumi and Y. Shiraki
Ieee Journal of Selected Topics in Quantum Electronics 18 巻 ( 6 ) 頁： 1830-1838 2012年12月
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Influence of Thermal Annealing on the Carrier Extraction in Ge/Si Quantum Dot Solar Cells
T. Tayagaki, N. Usami and Y. Kanemitsu
Japanese Journal of Applied Physics 51 巻 ( 10 ) 2012年10月
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Dependence of crystal orientation in Al-induced crystallized poly-Si layers on SiO2 insertion layer thickness
A. Okada, K. Toko, K. O. Hara, N. Usami and T. Suemasu
Journal of Crystal Growth 356 巻 頁： 65-69 2012年10月
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Large-Grain Polycrystalline Silicon Films Formed through Flash-Lamp-Induced Explosive Crystallization
K. Ohdaira, K. Sawada, N. Usami, S. Varlamov and H. Matsumura
Japanese Journal of Applied Physics 51 巻 ( 10 ) 2012年10月
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Realization of Large-Domain Barium Disilicide Epitaxial Thin Film by Introduction of Miscut to Si(111) Substrate
K. O. Hara, N. Usami, K. Toh, K. Toko and T. Suemasu
Japanese Journal of Applied Physics 51 巻 ( 10 ) 2012年10月