Epitaxial Film Growth of LiBH4via Molecular Unit Evaporation

Hiroyuki Oguchi, Sangryun Kim, Shingo Maruyama, Yuhei Horisawa, Shigeyuki Takagi, Toyoto Sato, Ryota Shimizu, Yuji Matsumoto, Taro Hitosugi, Shin Ichi Orimo


5 被引用数 (Scopus)


Complex hydrides have attracted considerable attention in fields including fast ion conduction and hydrogen storage. To understand the physical properties and to expand the fields of application of complex hydrides, physically well-defined epitaxial films that can facilitate the investigation of intrinsic properties and interfacial effects need to be fabricated. However, epitaxial films of complex hydrides remain difficult to produce. This study reports the growth of single-phase epitaxial films of the complex hydride LiBH4 and their high Li-ion conductivity of 1 × 10-2 S cm-1 at 423 K. To achieve this, we used a low-power infrared laser to induce the evaporation of LiBH4 molecular units; with this technique, we were able to deposit [BH4]- complex anions while preserving their molecular integrity, producing epitaxial films with high crystallinity, flat surface, and high Li-ion conductivity. These achievements will establish a solid basis for epitaxial growth of complex hydrides and pave the way for advanced studies of complex hydrides including surface and interfacial phenomena.

ジャーナルACS Applied Electronic Materials
出版ステータスPublished - 2019 9月 24

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電気化学
  • 材料化学


「Epitaxial Film Growth of LiBH4via Molecular Unit Evaporation」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。