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  1. 学位論文
  2. 博士論文

機能性薄膜と電気化学デバイスの作製と評価 及び機械学習の応用

https://doi.org/10.19000/0002000197
https://doi.org/10.19000/0002000197
1ff7d1b8-7dda-4977-a95e-eac02936ccff
名前 / ファイル ライセンス アクション
JEONG JEONG CHANYANG.pdf (3.4 MB)
Item type 学位論文 / Thesis or Dissertation(1)
公開日 2022-03-18
タイトル
タイトル Fabrication and Evaluation of Functional Thin Films and Electrochemical Devices and Application of Machine Learning
言語 en
タイトル
タイトル 機能性薄膜と電気化学デバイスの作製と評価 及び機械学習の応用
言語 ja
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_db06
タイプ doctoral thesis
ID登録
ID登録 10.19000/0002000197
ID登録タイプ JaLC
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
著者 チョン チャンヤン

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著者(英)
姓名 JEONG CHANYANG
抄録
内容記述タイプ Abstract
内容記述 In this study, WO3 NPs dispersion ink with excellent adhesion was developed for the
fabrication of electrochromic devices capable of wet coating, device fabrication tests were
performed using the developed materials, and performance was predicted and
demonstrated using machine learning.
To improve the adhesion between the WO3 nanoparticles and the substrate of the ink,
polyvinyl alcohol (PVA) was added as an additive. PVA was adjusted to 0-10 wt.%, and
electrochemical properties and EC properties were studied. As a result, the WO3 thin film
prepared with 1 wt.% PVA addition showed excellent adhesion between WO3
nanoparticles and substrate. In addition, it was found that the composition of the WO3
thin film exhibiting excellent electrochemical properties with the largest coloration
efficiency of 35 cm2/C and electrochromic properties with a change in visible light (λ =
633 nm) transmittance of 90%⇔13%.
To fabricate the next-generation EC device, we investigated the fabrication of flexible
ECD using a PET substrate. For the preparation of EC materials, coated WO3 and PB
films were prepared using the WO3 synthesized in Chapter 3 and the PB ink originally
developed by Adhesion and Interface Research Group at National Institute of Advanced
Industrial Science and Technology (AIST), and these were assembled to prepare a flexible
EC device. The prepared flexible PET EC device showed a dramatic color change from
transparent to dark blue and showed higher coloring efficiency (123.32 cm2 / C) than the
conventional glass EC device (86.44 cm2 / C). Furthermore, it showed electrochemical
stability without deterioration up to 100 cycles, and mechanically excellent durability
against repeated bending and twisting experiments.
Finally, machine learning was applied to obtain the optimal WO3 NPs dispersed ink
preparation condition for the application of EC materials. The predicted value obtained
through simulation showed an accuracy of more than 90% with the experimental value.
In addition, the highest coloring efficiency value of 38.2 cm2/C obtained through this
study was improved by about 10% compared to the coloring efficiency value (35.0 cm2/C)
of Chapter 3. Therefore, we believe that it is possible to develop an optimized process for
the preparation of EC materials using machine learning. In the future, we will focus on
the development of functional nano-dispersion inks optimized to prepare functional thin
films using various parameters (materials, manufacturing conditions, atmosphere, etc.)
through simulation prediction using more advanced algorithms.
言語 en
書誌情報
p. 1, 発行日 2022-03
著者版フラグ
言語 en
値 ETD
学位名
言語 ja
学位名 博士(工学)
学位授与機関
学位授与機関識別子Scheme kakenhi
学位授与機関識別子 10106
言語 ja
学位授与機関名 北見工業大学
学位授与番号
学位授与番号 甲第197号
研究科・専攻名
言語 ja
研究科・専攻名 生産基盤工学専攻
学位授与年月日
学位授与年月日 2022-03-18
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