/   Home   /   Newsroom   /   Research News

Scientists Fabricate Inorganic Perovskite Solar Cells with Record High Stabilized Efficiency

Jun 06, 2018     Email"> PrintText Size

A research team led by Prof. LIU Shengzhong from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences and Dr. JIN Zhiwen from Shaanxi Normal University fabricated inorganic perovskite solar cells with a record high stabilized efficiency of 14.4%. Their findings were published in Joule.

The most popular perovskite composition for photovoltaic applications is the organic-inorganic hybrid one with power conversion efficiency (PCE) as high as 22.7%. However, such hybrids suffer from poor photochemical and thermal stability owing to their volatile organic component. It is expected that the stability will be much improved if the organic cations are replaced by the inorganic ones.


Schematic structure, energy-level diagram and device performance. (Image by JIN Zhiwen) 

Recently, all-inorganic perovskite CsPbI2Br and CsPbI3 quantum dots (QDs) based solar cells are found to have excellent ambient phase stability. Unfortunately, their bandgap is too large and the current density is too low.

The researchers countered this problem by developing a bandgap grading cell structure, in which the CsPbI2Br film was used for the bottom component and the CsPbI3 QDs for the top one. As a result, the fabricated device could achieve the cell efficiency as high as 14.45%, which is the highest for inorganic perovskite solar cells to date.

It is expected that the record efficiency demonstrated using the graded bandgap design will stimulate significant interest in overcoming the present hurdles to achieve high efficiency and high stability.


(Editor: LI Yuan)


WANG Yongjin

Dalian Institute of Chemical Physics

Phone: 86-411-84374221
E-mail: wangyj@dicp.ac.cn

Related Articles

solar cell;perovskite;phase transition

Scientists Achieve Phase Transition Control for High-Performance Blade-coated Perovskite Solar Cells

Jun 04, 2018

A research team led by Prof. LIU Shengzhong at the Dalian Institute of Chemical Physics and Prof. ZHAO Kui at Shaanxi Normal University reported their findings on perovskite phase transition control for high-performance blade-coated perovskite solar ce...

solar cell;photovaltaic;long persistent phosphor;LPP

Chinese Scientists Explore All-weather Solar Cells

Apr 05, 2017

A photovoltaic revolution is taking place with the emergence of all-weather solar cells, according to a Chinese scientist. TANG's team and one led by YANG Peizhi, a professor with Yunnan Normal University, developed a solar cell using a crucial materia...

solar cell;Photovoltaic Polymers;symmetry-breaking

Symmetry-breaking for Flexible Solar Cells: A Better Commercialization Perspective?

Nov 24, 2016

For the first time, asymmetric BDTs have been designed to build up PSCs in a research group led by Prof. YANG Renqiang from the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) of Chinese Academy of Sciences. Surprisingly, the photovol...

Contact Us

Copyright © 2002 - Chinese Academy of Sciences