Project TitlePassivation of Defects in Perovskite Materials for Improved Solar Cell Efficiency and Stability
Track Code2017-028
Short Description

This technology is a method of dual defect passivation in perovskite materials.

Tagselectrical & electronics, dual defect passivation, perovskite, quaternary ammonium halides
Posted DateMay 5, 2017 11:49 AM


Jinsong Huang
Xiaopeng Zheng

Technology Description

This technology is a method for dual defect passivation in perovskite materials. The method uses quaternary ammonium halides (QAHs) to effectively passivate both cationic and anionic defects in organic-inorganic halide perovskites (OIHPs). With this dual defect passivation, the OIHP solar cells would increase open circuit voltage to 1.15 V and boost efficiency to 21%. Moreover, the dual defect passivation would reduce the trap density and prolong the carrier lifetime to further improve both the efficiency & stability of OHIPs solar cells.

Inventive Feature(s)

• Dual defect passivation of perovskite materials using quaternary ammonium halides (QAHs)


•  Easy Processing
•  Large open circuit voltage – Increase Voc to 1.15 V
•  High efficiency – Improve the efficiency to 21%
•  Enhanced stability –Inhibit the permeation of moisture & oxygen through the defects
•  Reduced charge trap density
•  Elongated carrier recombination lifetime

Potential Application(s)

•  Photovoltaic Devices

Intellectual Property

Patent Application Filed


Related Technologies

Licensing Contact

Zane Gernhart, Ph.D.
Technology Manager
Phone: 515-408-4685

About NUtech Ventures

NUtech Ventures is the non-profit technology commercialization affiliate of the University of Nebraska-Lincoln. Our mission is to facilitate the commercialization and practical use of innovations generated through the research activities at the University of Nebraska.


File Name Description
Tech Brief #2017-028 The technology brief is a one-page summary describing the technology, inventive features and benefits over the current state of the art Download