2023 Fiscal Year Final Research Report
Power generation mechanism of CNT-Si heterojunction solar cells revealed by highly aligned CNT films
| Project/Area Number |
21K04141
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 21050:Electric and electronic materials-related
|
|---|
| Research Institution | Asahikawa National College of Technology |
|---|
Principal Investigator |
Nakamura Motonori 旭川工業高等専門学校, システム制御情報工学科, 教授 (50435963)
|
|---|
| Project Period (FY) |
2021-04-01 – 2024-03-31
|
| Keywords | CNT-Siヘテロ接合太陽電池 / カーボンナノチューブ / CNT配向膜 |
|---|
| Outline of Final Research Achievements |
In this study, high-density and highly aligned CNT films were deposited and applied to CNT-Si heterojunction solar cells. CNT thin films with various degrees of alignment were prepared and used to fabricate solar cell devices and evaluate their power generation characteristics. The power generation mechanism of the CNT-Si solar cell was investigated by taking advantage of the selective absorption of light by the aligned CNT layers by using linearly polarized light as incident light. As a result, it was confirmed that the contribution of light absorbed by the CNT layer to the photocurrent in the solar cell device is small, and that charge separation by Schottky junctions is dominant.
|
| Free Research Field |
電子デバイス
|
| Academic Significance and Societal Importance of the Research Achievements |
本研究では，CNT-Siヘテロ接合太陽電池のCNT層として，高密度・高配向CNT膜を適用し，CNT層に選択的に光を吸収させることで，今まで多くの研究者により議論されてきたCNT-Si太陽電池の発電メカニズムを明らかにした点に大きな学術的な意義がある．CNT配向膜と本研究で考案した評価法を用いれば，他の様々な種類のCNT-Si太陽電池についても発電メカニズムの検証ができる．現在主流である結晶Siによる太陽電池に代わる新たなデバイスに位置づけられるためには，その発電メカニズムの解明が必須であり，本研究の成果が再生可能エネルギー利用促進の面においても，大きな意義を有している．
|
