• bulk heterojunctions;
  • oxides;
  • photovoltaics;
  • polymers;
  • thin films
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Sandwich-Structure Hybrid Solar Cells—Towards High Efficiency and Stability: The cover image illustrates a sandwich-structure hybrid solar cell. Solar cells made of organic materials suffer from lower efficiency and poor stability in comparison with their inorganic counterparts such as silicon. However, organic solar cells do possess many advantages such as flexibility and ease of processing. In the Review Article by Ching-Fuh Lin and colleagues at the National Taiwan University on page 382, the authors examine the recent progress and latest achievements in sandwich-structure hybrid solar cells. The recent research focusing on sandwich-structure hybrid solar cells has revealed their great potential for future solar-cell production.