Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Information Science and Technology / Faculty of Information Science and Technology >
Peer-reviewed Journal Articles, etc >
Creation of unexplored tunnel junction by heterogeneous integration of InGaAs nanowires on germanium
Title: | Creation of unexplored tunnel junction by heterogeneous integration of InGaAs nanowires on germanium |
Authors: | Yoshida, Akinobu Browse this author | Gamo, Hironori Browse this author | Motohisa, Junichi Browse this author →KAKEN DB | Tomioka, Katsuhiro Browse this author →KAKEN DB |
Issue Date: | 31-Jan-2022 |
Publisher: | Nature Portfolio |
Journal Title: | Scientific reports |
Volume: | 12 |
Issue: | 1 |
Start Page: | 1606 |
Publisher DOI: | 10.1038/s41598-022-05721-x |
Abstract: | Heteroepitaxy has inherent concerns regarding crystal defects originated from differences in lattice constant, thermal expansion coefficient, and crystal structure. The selection of III-V materials on group IV materials that can avoid these issues has however been limited for applications such as photonics, electronics, and photovoltaics. Here, we studied nanometer-scale direct integration of InGaAs nanowires (NWs) on Ge in terms of heterogenous integration and creation of functional materials with an as yet unexplored heterostructure. We revealed that changing the initial Ge into a (111)B-polar surce anabled vertical InGaAs NWs to be integrated for all In compositions examined. Moreover, the growth naturally formed a tunnel junction across the InGaAs/Ge interface that showed a rectification property with a huge current density of several kAcm(-2) and negative differential resistance with a peak-to-valley current ratio of 2.8. The described approach expands the range of material combinations for high-performance transistors, tandem solar cells, and three-dimensional integrations. |
Type: | article |
URI: | http://hdl.handle.net/2115/84457 |
Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
|