Research
  Key Laboratories
  Research Divisions
  Research Interests
  Supporting System
  Achievements
  Research Progress
  Research Programs
  Technology Transfer
    Location: Home > Research > Research Progress

Scientists Design Two-Dimensional Hybrid Perovskite Ferroelectric for Polarized-light Detection

Two-dimensional hybrid perovskite have attracted intense attention owing to their intriguing physical and photoelectric characteristics. In terms of the structure, two-dimensional hybrid perovskites exhibit distinct compatibility and tenability. Thus organic and inorganic components can be tailored to modulate electronic, optical, and photoelectric properties.  

In a study published in J. Am. Chem. Soc., the research group led by Prof. LUO Junhua from Fujian Institute of Research on the Structure of Matter (FJIRSM) of Chinese Academy of Sciences reported a bilayered hybrid perovskite ferroelectric.

Such a bilayered hybrid perovskite ferroelectric was rationally synthesized by introducing a large flexible cation into the typical three-dimensional perovskite MAPbBr3. Researchers found that this perovskite exhibited superior ferroelectricity with a Ps value of 3.6 μC/cm2.  

Single crystal X-ray experiments reveal that thermally induced order-disorder transformation of organic cations and distortion of inorganic moieties synergistically lead to the ferroelectric-to-paraelectric phase transition. 

Based on the intrinsic structure anisotropy, notable carrier transport and intrinsic spontaneous polarization, polarized-light detection of this hybrid perovskite ferroelectric was performed. It shows highly polarization-sensitive detection in the short wave region (>2.5 eV). A dichroism ratio of2.0 was obtained, corresponding to the maximum and minimum photoresponses along crystallographic c- and a- axes, respectively.  

Furthermore, crystal-device of this perovskite ferroelectric shows prominent polarized-light detection performance, including a high photodetectivity (109 Jones) and fast photoresponse rate (20 μs). 

The study on polarized-light detection of this hybrid perovskite ferroelectric will broaden new branch of two-dimensional members in the class of organic-inorganic hybrid perovskites for the future optoelectronic device applications.  

  

 

Schematic representation of polarized-light detection by the two-dimensional hybrid perovskite ferroelectric. (Image by Prof. LUO’s group) 

                                                                                                  

Contact: 

Prof. LUO Junhua 

Fujian Institute of Research on the Structure of Matter 

Chinese Academy of Sciences 

Email: jhluo@fjirsm.ac.cn   

 


Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences
Address: 155 Yangqiao Road West,Fuzhou,350002,P.R.China Tel: 0591-83714517 Fax: 0591-83714946 E-mail: fjirsm@fjirsm.ac.cn
Copyright @ 2000-2009 fjirsm. All rights reserved.