[Th1c-O42] Sub area 4-2: Doping and heterointerfaces for high efficiency

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)

[Th1c-O42-01] 11.9% efficient Cd-Free Cu₂ZnSnS₄ solar cells enabled by mitigation of Na interstitial defects

*Xiaojie Yuan¹, Jianjun Li^1,2, Jialiang Huang¹, Jialin Cong¹, Lishuang Zhang¹, Karen Privat³, Yin Yao³, Zhou Xu⁴, Robert J. Patterson¹, Guojun He¹, Ao Wang¹, Kaiwen Sun¹, Xin Cui¹, Martin A. Green¹, Xiaojing Hao¹ (1. Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales (Australia), 2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang (China), 3. Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales (Australia), 4. Monash Centre for Electron Microscopy, Monash University, Clayton, Victoria (Australia))