Our laboratory is conducting research on nanoelectronic materials* with the aim of creating electronics technology with new electronic and optical functions. (* nanometer is roughly equivalent to the length of 10 atoms.)
We will understand the behavior of electrons and light in nanoelectronic materials such as semiconductors from the viewpoints of electronics and condensed matter physics. We are also engaged in the fabrication of energy-saving light-emitting diodes (LEDs), lasers, photodiodes, and other optoelectronic devices using nanomaterials, the exploration of new photoelectric information conversion devices, and research on plasma simulations for device integration.
In this laboratory, there are graduate students of Division of Electronics for Informatics, Graduate School of Information Science and Technology, Hokkaido University, and students of Department of Electronics and Information Engineering, School of Engineering, Hokkaido University.
Using molecular beam epitaxy, we fabricate ultra-pure semiconductor crystals and fabricate optical elements such as LEDs, lasers, and photodiodes through processes such as vacuum deposition, sputtering, and etching.
The electronic states and the operational characteristics of grown crystals and optoelectronic devices are studied by photoluminescence in the real time region of femto-, pico*-, nano-, and microseconds. The spin state, which is the magnetic property of electrons, can also be analyzed by studying the polarization state of photoluminescence.
(* The distance light can travel in 1 picosecond is only 0.3 mm. 1 picosecond corresponds to a frequency range of 1 terahertz (THz)).
Plasma characteristics for use in semiconductor device integration processes are studied by computational analysis.
Featured Articles
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Mr. Kohei Eto's research on spin LEDs capable of high voltage operation at room temperature has been published in Physical Review Applied (IF: 4.9).
Efficient Room-Temperature Operation of a Quantum Dot S…
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Research results on room temperature operation of field-effect optical spin devices have been published in Advanced Electronic Materials (IF:7.6)
Efficient Room-Temperature Voltage Control of Picosecon…
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International collaborative research results on the world's highest performance semiconductor spin amplification at room temperature and even at 110°C have been published in Nature Photonics (IF:31).
Room-temperature electron spin polarization exceeding 9…
Awards (Japanese Only)
News (Japanese Only)
Publication
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樋浦諭志准教授の量子ドットスピンLEDを用いた円偏光の電気的制御に関する解説記事がNature(IF:64.8)に掲載されました。
Electrons flip a switch on optical communicationsS. Hiu…
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森田彩乃さんの希薄窒化InGaNAs量子ドットにおける高温での高効率発光に関する研究成果がJournal of Applied Physics(IF:3.2)に掲載されました。
High-temperature efficient luminescence of dilute-nitri…
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佐藤紫乃さんのInAs量子ドット/GaNAs量子井戸における高速スピン増幅ダイナミクスに関する研究成果がApplied Physics Letters(IF:4.0)に掲載されました。
Effect of dilute nitride GaNAs quantum well thickness o…
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朴昭暎さんのGaNAsと量子ドットを用いた電界効果光スピン素子の室温動作に関する研究成果がNanoscale(IF:6.7)に掲載されました。
Room-temperature electric field control of spin filteri…
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本学量集センター、東京大学、東レリサーチセンター、スウェーデン・リンショーピン大学との国際共同研究の成果がApplied Physics Letters(IF:4.0)に掲載されました。
GaAs/GaInNAs core-multishell nanowires with a triple qu…
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本学理学研究院の錯体化学研究室との共同研究の成果がChemistry – A European Journal(IF:4.3)に掲載されました。
Vapor‐Induced Assembly of a Platinum(II) Complex Loaded…