R. Hamaguchi   M. Yoshizawa-Fujita   T. Miyasaka   H. Kunugita   K. Ema   Y. Takeoka   M. Rikukawa   
CHEMICAL COMMUNICATIONS 53(31) 4366-4369 2017年4月 [査読有り]
Formamidine (FA) and cesium (Cs) cations were introduced into quasi-two-dimensional (2D) perovskites as B site cations. The unique crystalline growth of the resulting (n-C6H13NH3)(2)FAPb(2)I(7), which promotes charge transport in photovoltaic sola...
The effect of the structural properties on the optical characteristics was investigated for In<inf>0.3</inf>Ga<inf>0.7</inf>N nanocolumns (NCs) grown on GaN NCs as a function of GaN column diameter, D<inf>GaN</inf>. With increasing D<inf>GaN</inf>...
The nature of metal oxide scaffold played a pivotal role for the growth of high quality perovskites and subsequently facilitates efficient photovoltaics devices. We demonstrate an effective way to fabricate a low-temperature TiO2 brookite scaffold...
Takao Oto   Yutaro Mizuno   Rin Miyagawa   Tatsuya Kano   Jun Yoshida   Kazuhiro Ema   Katsumi Kishino   
JAPANESE JOURNAL OF APPLIED PHYSICS 55(10) 105001 2016年10月 [査読有り]
Emission mechanisms in regularly arrayed InGaN/GaN quantum structures on GaN nanocolumns were investigated, focusing on the spatial emission distribution at the nanocolumn tops and the carrier recombination dynamics. The double-peak emission origi...
We consider the phase sensing via a weak optical coherent state at quantum limit precision. A detection scheme for the phase estimation is proposed, which is inspired by the suboptimal quantum measurement in coherent optical communication. We theo...