Yajun Gao

Postdoctoral Fellows


Research Interests

● Optical Properties of Perovskite semiconductors
● The role of traps in the device performance
● Transport of carriers in the active layer

Selected Publications

  • Yajun GaoRoderick C. I. MacKenzie*, Yang Liu, Bin Xu, Paul H.M. van Loosdrecht*, Wenjing Tian*,“Engineering Ultra Long Charge Carrier Lifetimes in Organic Electronic Devices at Room Temperature”. Advanced Materials Interfaces, 2015,2.
  • Yajun GaoAlmantas Pivrikas, Bin Xu, Yang Liu, Weiqing Xu, Paul H.M. van Loosdrecht*, Wenjing Tian*.,“Measuring electron and hole mobilities in organic systems: charge selective CELIV”. Synthetic Metals, 2015, 203,187-191.     
  • Shanpeng Wen*, Chen Wang, Pengfei Ma, Ge Wang, Wei Dong, Yajun Gao*, Shengping Ruan*,“Improved Efficiency in Dithieno [3,2-b:2′,3′-d] silole-Based Polymer Solar Cells by the Insertion of ZnO Optical Spacer”. The Journal of Physical Chemistry C, 2015, 119, 20817-20822.
  • Yajun Gao, Weichun Zhang, Xinglong Wu* et al.,“Hydrothermal self-assembling of ZnO nanorods into sphere-like superstructures and their optical characteristics”. Applied Surface Science, 2008, 255, 1982-1987.
  • ​Yang Liu, Yajun Gao, Bin Xu*, Paul. H. M. van Loosdrecht*, and Wenjing Tian*,”Trap-limited Bimolecular Recombination in Poly(3-hexylthiophene):Fullerene​ blend films”. Organic Electronics 38(2016) 8-14


  • ​2010-2015, PhD student in Zernike Institute for Advanced Materials, University of Groningen, the Netherlands
  • 2004-2007, Master student in Department of Physics, Nanjing University, P.R.China
  • 1999-2003, Bachelor student in College of Physics and Electronic Engineering, Shanxi University, P.R.China

Professional Profile

  • 2015-2017, Research assistant in 2nd Institute of Physics, University of Cologne, Cologne

Research Interests Keywords

Photophysics Charge Carrier Dynamics Hybrid Solar Cells