April 2025
Intermediate
240 pages
6h 56m
Japanese
Content preview from AI開発力を鍛える！機械学習と最適化による問題解決講座
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制約付きベイズ最適化の事例
制約付きベイズ最適化の具体例として、著者らが行った事例「Siヘテロ接合太
陽電池用のアモルファスSi製膜条件最適化」
[ 1 , 2 ]
を紹介します。Siヘテロ接合
太陽電池は、主要な太陽電池モジュール用太陽電池である結晶 Si 系太陽電池の中
でも、エネルギー変換効率（発電効率）が高い太陽電池として活発に研究開発が
行われています。Siヘテロ接合太陽電池の断面模式図を
図 3.6.3 に示します。太
陽光により生成された過剰な自由キャリアを、電極を通して外部に取り出して発
電するためには、pn接合などの整流特性を示す接合が必要です。Si ヘテロ接合太
陽電池では、この整流特性を示す接合として、表面と裏面の水素を含むアモル
ファスSi（a-Si:H）層とSi基板とのヘテロ接合が用いられます。このとき、アモ
ルファスSi層の品質が悪いと、ヘテロ接合界面での電荷損失が発生し、発電効率
が低下してしまいます。アモルファスSi層は化学気相堆積（Chemical Vapor
Deposition（CVD）)法によって製膜されますが、製膜条件によってアモルファ
スSi層の品質は左右されます。今回は、触媒化学気相堆積（Catalytic Chemical
Vapor Deposition（Cat-CVD））法において、アモルファスSi 層の品質を最大
にするように、ベイズ最適化を用いて製膜条件の最適化を行いました。
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.