Suppression and Reversion of Light-Induced Phase Separation in Mixed-Halide Perovskites by Oxygen Passivation
  
  
    
  
  
  
  
  
    
    
            Weisheng Fan𝟙, 
            Shi Yongliang, 
            Tongfei Shi, 
            Shenglong Chu, 
            Wenjing Chen, 
            Kester O. Ighodalo, 
            Zhao Jin, 
            Xinhua Li, 
            Zhengguo Xiao
   
  
  
  
  
    
    
      
    
    January 2019
  
  
  
  
  
  
  
  
  
  
  
  
 
    
  
  
  
  
 
  
    
    
    
    
    
    
    
    
      
      
        
          Publication
          ACS Energy Letters