Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Naoto Umezawa"'
Autor:
Ramu Pasupathi Sugavaneshwar, Kai Chen, Gandham Lakshminarayana, Satoshi Ishii, Thang Duy Dao, Naoto Umezawa, Tadaaki Nagao
Publikováno v:
APL Materials, Vol 3, Iss 11, Pp 116103-116103-6 (2015)
Thin films of SrTiO3 (STO) and Rh-doped SrTiO3 (Rh-STO) were synthesized by sol-gel method and loaded with Ag nanoparticles. Pristine STO films exhibited anodic photocurrent while Rh-STO exhibited cathodic photocurrent. An enhancement in the overall
Externí odkaz:
https://doaj.org/article/233ad2960556483986857a916248b626
Publikováno v:
APL Materials, Vol 3, Iss 10, Pp 104405-104405-6 (2015)
A series of magnesium vanadates (MgV 2O6, Mg2V 2O7, and Mg3V 2O8) were synthesized to investigate the effect of cation concentration on photocatalytic performance. The samples were characterized by X-ray diffraction, field emission-scanning electron
Externí odkaz:
https://doaj.org/article/894ad0dc198f4124afd6cc852fb137da
Autor:
Hungru Chen, Naoto Umezawa
Publikováno v:
International Journal of Photoenergy, Vol 2014 (2014)
Perovskite strontium stannate SrSnO3 is a promising photocatalyst. However, its band gap is too large for efficient solar energy conversion. In order to sensitize SrSnO3 toward visible-light activities, the effects of doping with various selected cat
Externí odkaz:
https://doaj.org/article/0526127fcfa84fb190b96c3714d40e10
Publikováno v:
The Journal of Physical Chemistry Letters. 12:4823-4832
An ab initio evolutionary search algorithm was combined with density functional theory (DFT) calculations to predict a series of 2-D BxNy (1 < x/y ≤ 2). Particularly, B5N3 and B7N5 monolayers have sufficiently low formation enthalpy and excellent d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88fe93b2d755ceb1a7b4b1bc5cd6240b
https://doi.org/10.1021/acs.jpclett.1c00913
https://doi.org/10.1021/acs.jpclett.1c00913
Autor:
Junjie Wang, Naoto Umezawa, Artem R. Oganov, Vladislav A. Blatov, Tomofumi Tada, Kun Li, Yutong Gong, Hideo Hosono
Publikováno v:
Journal of Advanced Ceramics. 10:565-577
Although tin monoxide (SnO) is an interesting compound due to its p-type conductivity, a widespread application of SnO has been limited by its narrow band gap of 0.7 eV. In this work, we theoretically investigate the structural and electronic propert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d87e4488560200923c690808b28f723
https://doi.org/10.1007/s40145-021-0458-1
https://doi.org/10.1007/s40145-021-0458-1
Publikováno v:
Scripta Materialia. 172:43-46
First-principles calculations of the density of states (DOS) and partial charge distributions for BaSi2 revealed that the electronic states of the valence bands of BaSi2 are mainly derived from the Si 3p states of Si4 tetrahedra formed in BaSi2, whil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3efd0e45b3105aa6c8b54476d30d92de
https://doi.org/10.1016/j.scriptamat.2019.07.004
https://doi.org/10.1016/j.scriptamat.2019.07.004
Autor:
Tadaaki Nagao, Toshihide Nabatame, Thien Duc Ngo, Kai Chen, Akemi Tamanai, Ørjan S. Handegård, Annemarie Pucci, Nguyen Thanh Cuong, Hai Dang Ngo, Naoto Umezawa
Publikováno v:
CrystEngComm. 21:34-40
Iron(III) titanates are composed of earth-abundant elements and are attracting rapidly growing interest as highly promising candidates for solar-energy as well as optoelectronics applications. In this article, we report on the successful synthesis of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47647b8b6f9f8207a1fd49625baf5e3c
https://doi.org/10.1039/c8ce01475b
https://doi.org/10.1039/c8ce01475b
Publikováno v:
Catalysis Science & Technology. 9:3619-3622
A new visible light responsive photocatalyst Sn(II)-doped SrNb2O6 has been developed for water reduction and water oxidation reactions. First-principles calculations revealed that the Sn(II) dopant created a new occupied state in the band gap which r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0c7509557b1e79b3813e44675a020d4
https://doi.org/10.1039/c9cy01080g
https://doi.org/10.1039/c9cy01080g
Autor:
Jingcheng, Qi, Shiyao, Wang, Junjie, Wang, Naoto, Umezawa, Vladislav A, Blatov, Hideo, Hosono
Publikováno v:
The journal of physical chemistry letters. 12(20)
An
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d6d54088223ce6c4e5d001b94485d3b5
https://pubmed.ncbi.nlm.nih.gov/33999633
https://pubmed.ncbi.nlm.nih.gov/33999633
Autor:
Kun Li, Junjie Wang, Vladislav A. Blatov, Yutong Gong, Naoto Umezawa, Tomofumi Tada, Hideo Hosono, Artem R. Oganov
Although tin monoxide (SnO) is an interesting compound due to its p-type conductivity, a widespread application of SnO has been limited by its narrow band gap of 0.7 eV. In this work, we theoretically investigate the structural and electronic propert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d81099c18235e9733bf373aad0226357
https://doi.org/10.21203/rs.3.rs-128647/v1
https://doi.org/10.21203/rs.3.rs-128647/v1
