Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Photovoltaic switching mechanism in lateral structure hybrid Perovskite solar cells



Yongbo Yuan, Jungseok Chae, Yuchuan Shao, Qi Wang, Zhengguo Xiao, Andrea Centrone, Jinsong Huang


Organometal trihalide perovskite solar cells with lateral device architecture recently attracted interest because of their switchable photovoltaic effect, which potentially could be leveraged to realize transparent-electrode-free solar cells. However, the switching mechanism in these devices remains unknown. Here, we prove that the activation of the switchable photovoltaic effect in those devices is triggered by long range electromigration of methylammonium ions (MA+), as observed directly with the Photothermal Induced Resonance technique. The electromigration of MA+ leads to the formation of a lateral p-i-n structure. Macroscale experiments show that electromigration of MA+ ions occurs for applied fields as small as 0.3 V/µm with an activation energy of 360 ± 30 meV.
Advanced Energy Materials


Perovskite Solar Cells, switchable photovoltaic, ionic electromigration, Photothermal Induced Resonance, Kelvin Probe Force Microscopy, activation energy


Yuan, Y. , Chae, J. , Shao, Y. , Wang, Q. , Xiao, Z. , Centrone, A. and Huang, J. (2015), Photovoltaic switching mechanism in lateral structure hybrid Perovskite solar cells, Advanced Energy Materials, [online],, (Accessed June 23, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created August 4, 2015, Updated October 12, 2021