Dalian Institute of Chemical Physics,Chinese Academy of Sciences
Welcome Campus Map Contact 中文
About Research People International Facilities
Location: Home >> News & Events >> News
DICP Scientists Develop Sensitive Photodetector Based on Lead-free Perovskite
  English.dicp.cas.cn    Posted:2018-05-28    From:Group 1101

A research team led by HAN Keli from Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences fabricated a sensitive photodetector based on lead-free perovskite single crystals. Their findings were published in The Journal of Physical Chemistry Letters.

Organ-lead perovskites have recently attracted broad attentions due to the excellent optoelectronics properties. For instance, the high performance photodetectors have been developed based on organo-perovskites.

However, the heavy metal Pb in lead-based perovskites is toxic to both humans and the environment which is often considered as a drawback. Thus, finding a stable, non-toxic and high performance perovskite is highly desirable.

Sb3+ based single crystals and the responsivity of the photodetector. (Image by YANG Bin)

“We have developed a high performance photodetector based on MA3Sb2I9 microsingle crystals (MSCs), ” said Prof. HAN.

Scientists found that MA3Sb2I9 single crystals exhibited a low trap-state density of ~1010 cm-3, high carrier mobility of 12.8 cm2 V-1 s-1 and long carrier diffusion length reaching 3.0 μm.

The responsivity of MA3Sb2I9 single crystal photodetector can reach to 40 A/W for monochromatic light (460 nm).In addition, the photodetector shows fast response time (<1 ms), which corresponds to both high gain and gain-bandwidth product.

This work was supported by the key research project of National Natural Science Foundation. (Text by YANG Bin)



Campus Map

Old Website

Dalian Institute of
Chemical Physics, CAS
457 Zhongshan Road
Dalian, China 116023

Copyright © 1999-2018. Dalian Institute of Chemical Physics, Chinese Academy of Sciences. All rights reserved.