What's New

28/12/2017   Paper list updated. One paper was published in Special Issue for Low Temperature Bonding for 3D Integration of Jpn. J. Appl. Phys.
09/12/2017   Paper list updated. Two papers were published in Special Issue for Low Temperature Bonding for 3D Integration of Jpn. J. Appl. Phys.
17/11/2017   Two papers were presented by graduate students in PVSEC-27 held in Ohtsu, Japan (Nov. 12-17, 2017).
22/09/2017   Two papers were presented by graduate students in SSDM 2017 held in Sendai, Japan (Sept. 19-22, 2017).
08/09/2017   Five authored and one co-authored papers were presented in The 78th JSAP Autumn Meeting, 2017 [Japanese text only].
28/08/2017   Dr. Jianbo Liang returned and presented the latest joint-research results with Prof. Kuball at Univ. of Bristol for characterizing diamond/Si bonding interfaces in TWHM-2017.
28/07/2017   One paper was presented in ICNS 2017 held in Strasbourg, France (July 22-28, 2017).
16/07/2017   Research topics updated (diamond/Si bonding added).
15/07/2017   Two papers were presented in IEEE PVSC-44 (June 25-30, 2017).
20/04/2017   Prof. Shigekawa gives an invited talk in ICEP 2017 held in Yamagata, Japan (Apr. 19-22, 2017).
12/04/2017   Five authored and one co-authored papers shall be presented in 2017 5th International Workshop on Low Temperature Bonding for 3D Integration (LTB-3D 2017) held in Tokyo, Japan (May 16-18, 2017).
member list updated.
31/03/2017   Five authored and one co-authored papers were presented in 2017 Spring Meeting of Japan Society of Applied Physics [Japanese text only].
Paper list updated (one paper reporting bonding of diamond to Si sub. added).
28/02/2017   Dr. Jianbo Liang shall stay at Prof. Martin Kuball's group at Univ. of Bristol UK until 28/08/2017.

Message

Our research group was kicked out in Oct. 2011 for proposing and demonstrating concepts of novel semiconductor devices. Noting that equipments for producing higher electrical powers with smaller environmental load and lower costs are strongly sought for so as to realize greener society,we have defined our research target as demonstrating the potential of solar cells composed of mechanically-stacked subcells, or hybrid tandem solar cells, as a candidate for third-generation photovoltaic devices with overwhelming high efficiency (>50%). We are proceeding on research by developing and integrating all aspects of relevant technologies (semiconductor device fabrication, characterization,and so on) in combination with fundamental sciences such as physics and electronics.

We announce with sincere gratitude that we receive supports from a large number of institutes and companies. In particular we thank to "Development of high performance and reliable PV modules to reduce levelized cost of energy" Project of New Energy and Industrial Technology Development Organization (NEDO) and "Creative Research for Clean Energy Generation Using Solar Energy" Project in Core Research for Evolutional Science and Technology (CREST) programs of Japan Science and Technology Agency (JST) for their financial supports.


N. Shigekawa