Zobrazeno 1 - 10 of 27 pro vyhledávání: '"Yoji Akaki"'
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Fabrication of (Cu,Ag)2SnS3 thin films by sulfurization for solar cells
Autor: Satoru Seto, Yoji Akaki, Toshiyuki Yamaguchi, Shigeyuki Nakamura, Masanobu Izaki, Junji Sasano, Koichi Hatayama, Mitsuki Nakashima, Hideaki Araki
Publikováno v: Thin Solid Films. 642:8-13
In this paper, we fabricated thin films composed of (Cu,Ag)2SnS3 using a sulfurization process for photovoltaic devices. The stacked NaF / Sn / (Ag + Cu) precursor was deposited by sequential evaporation of Ag, Cu, and Sn elements and NaF followed by
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3e3015fbb7bcb4a8aef12474a901a24
https://doi.org/10.1016/j.tsf.2017.09.010
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5
Synthesis of Cu(In,Ga)Se 2 crystals using a crank ball mill
Autor: Suzuka Yamada, Tomoichiro Okamoto, Yoji Akaki, Hideki Noji
Publikováno v: physica status solidi c. 12:684-687
Cu(In,Ga)Se2 (CIGS) crystals were synthesized by a mechanochemical (MC) process using a crank ball mill. The molar ratios of starting materials were Cu:In:Ga:Se=1:1-x:x:2 (0≤x≤1) and Cu:In:Ga:Se=1:0.7:0.3:y (2≤y≤3). The reaction time reduced
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a61f6e671c41e32ca2ab2ce26bc411e
https://doi.org/10.1002/pssc.201400327
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6
Effects of H 2 S annealing on Cu‐Sn‐S thin films prepared from vacuum‐evaporated Cu‐Sn precursor
Autor: Yuji Miyata, Yoji Akaki, Shigeyuki Nakamura
Publikováno v: physica status solidi c. 12:765-768
In this work, Cu-Sn-S thin films were prepared from a vacuum-evaporated Cu-Sn precursor via annealing in H2S from 200 to 500 °C for 1 h. Cu2SnS3 thin films with monoclinic and tetragonal structures were observed by X-ray diffraction when the anneali
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04012e1de6f87ea4d0a881e3a99af6e1
https://doi.org/10.1002/pssc.201400310
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7
Effects of Annealing and Substrate Temperature for Sn-S Thin Films
Autor: Hideaki Araki, Kazuya Iwasaki, Shigeyuki Nakamura, Yoji Akaki
Publikováno v: 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).
Sn and SnS thin films were deposited by thermal evaporation. The substrate temperature was from room temperature to 300 °C. After deposition, the thin films prepared at R.T. were annealed in a H2S atmosphere at temperature ranging from 100 to 500 °
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e350d5277ab3285293dd1a82fc87dfc1
https://doi.org/10.1109/pvsc.2017.8521502
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10
Growth and characterization of Mn‐doped AgInS 2 grown by a hot‐press method
Autor: Yutaka Ohno, Ichiro Yonenaga, Yoji Akaki, Kenji Yoshino, Yasuhiro Shirahata
Publikováno v: physica status solidi c. 6:1043-1046
Mn-doped AgInS2 crystals are grown by a hot-press method at 700 °C for 1 hour under high pressure of 25 MPa from stoichiometric Ag2S and In2S3 powders with the Mn atoms with a concentration between 5 and 20 mol.%. Mn-doped crystals showed diffractio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea9c8979094a89af92542e117beb963b
https://doi.org/10.1002/pssc.200881210
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