Student written Research Laboratory Guidebook 2023Nagaoka University of Technology

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Solar Energy Device Laboratory

Professor / Kunihiko TANAKA  Assistant Professor / Ayaka KANAI  Technical Staff / Hideyuki TOYOTA

ProfessorKunihiko TANAKA

profiles and activiities profiles and activiities at nagaoka university of technology

Assistant ProfessorAyaka KANAI

profiles and activiities profiles and activiities at nagaoka university of technology

Technical StaffHideyuki TOYOTA

profiles and activiities profiles and activiities at nagaoka university of technology
  • environment-friendly
  • Preparation, measurement, evaluation, all with own hands!
  • Cu = idol, Sn = steady, Si = frient, S = life


Kunihiko TANAKA
Professor Tanaka always works in the same room with students. Therefore, if there is something you do not understand in the research, you can discuss it immediately. In addition, prof. Tanaka is very friendly to the students, we have a chat with prof. Tanaka every day.

Research Content

Our Laboratory mainly fabricates thin film solar cells by ourselves and investigates fundamental physics of compounds semiconductors used for solar cells, and to reduce cost and construct the solar cells easily, semiconductor thin films for solar cells are prepared in non-vacuum.

We do all process of fabrication of solar cells by ourselves and evaluate the solar cells with our own hands. Therefore we can feel very pleasure if high conversion efficiency is established.

We also growth single crystal of the semiconductors for solar cells and investigate basic physics of the semconductors by observation of photoluminescence.

Experimental apparatus made by laboratory students

A Day in the Lab

10:00 Preparation of materials for debriefing sessions.
12:00 I go to school cafeteria with laboratory menbers.
13:00 Start-up of experimental equipment.
14:00 Start of experiment.
16:00 I finished the experiment, I summarize the experiment by data reduction.
18:00 Ra-men time or returning home.

Of course, there are people who remain after supper and are doing experiment.
At our laboratory, we can plan by ourselves because lack of core-time.
We are always chatting in laboratory with each other, and it is lively every day.

Phoros of the camp at the lab

Thesis Subjects

  • (M)Preparation of Cu2SnS3 thin film using mist CVD method
  • (M)Preparation and evaluation of Cu2IVS3 bulk single crystals
  • (M)Preparation of Cuprous Halides transparent p-type semiconductor thin films by solution processing

The number of
PhD Graduates


Major employers of Graduates

  • Tokyo Electron Ltd.
  • Stanley Electric Co., Ltd.
  • SoftBank Corp.
  • Hitachi Kokusai Electric Inc.
  • Showa Denko Materials Co., Ltd.
  • GS Yuasa Corporation
  • Hirose Electric Co., Ltd.
  • Hino Motors, Ltd.
  • Furukawa Battery Co., Ltd.
Writer : OKAMURA Kazuya, Electrical, Electronics and Information Engineering
(Nagaoka Technical High Schoool)