材料科学
钙钛矿(结构)
光电流
卤化物
自旋电子学
手性(物理)
圆极化
自旋(空气动力学)
螺旋度
凝聚态物理
光电子学
化学物理
极化(电化学)
圆二色性
偶极子
不对称
结晶学
无机化学
光学
物理
化学
铁磁性
对称性破坏
手征对称破缺
Nambu–Jona Lasinio模型
微带线
粒子物理学
热力学
量子力学
作者
Po-Jung Jimmy Huang,Kouji Taniguchi,Masato Shigefuji,Takatsugu Kobayashi,Masakazu Matsubara,Takao Sasagawa,Hiroyasu Sato,Hitoshi Miyasaka
标识
DOI:10.1002/adma.202008611
摘要
The control of the optoelectronic properties of 2D organic–inorganic hybrid perovskite (2D-OIHP) lead halides is an increasingly prevalent topic. Herein, the observation of the circular photogalvanic effect (CPGE) in new enantiomorphic 2D-OIHP lead iodides is reported, which are synthesized as a first OIHP-related system belonging to a chiral space group by incorporating organic chiral cations into the inorganic layers of lead iodides. The CPGE is an optoelectronic phenomenon associated with the spin–orbit coupling of heavy atoms in noncentrosymmetric systems. Owing to the CPGE, light-helicity-dependent steady photocurrents are generated without an external bias voltage under the irradiation of circularly polarized light. Furthermore, the sign reversal of the CPGE photocurrent depending on the chirality of the designed 2D-OIHP lead iodides is observed. This result indicates formation of the theoretically predicted radial spin-polarized texture in k-space of chiral systems owing to spin-momentum locking. Hence, chiral 2D-OIHP lead halides can be a promising platform for engineering opto-spintronic functionalities.
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