[10a-Z15-1~14] 13.9 Compound solar cells

[10a-Z15-4] Hydrogen generation of 3-junction III-V solar cell with electroless platinum black catalyst

〇(M2)Yuichi Mikami¹, Yuki Nakamura¹, Kei Odashima¹, Kota Yoshida¹, Ryoki Sugita¹, Kiryu Yamamoto¹, Taiga Shibuya¹, Yuma Aoki¹, Li Xuefei², Yang Wenxian², Shulong Lu², Shiro Uchida¹ (1.Chiba inst., 2.Suzhou Institute of Nano-Tech and Nano-Bionics, CAS)

Keywords:III-V solar cell, Hydrogen generation, platinum black catalyst

For hydrogen generation, InGaP/GaAs/Ge 3-junction solar cell with electroless platinum black plating and IrO₂ of the counter electrode were prepared in the electrolyte KHCO₃ solution. The amount of hydrogen produced was measured, irradiating the solar cell with a quasi-solar light. The reaction current obtained in this experiment was confirmed to deteriorate by about 20% after 10 hours. With respect to the antireflection film on the surface, no significant discoloration was observed in this sample, but it was observed that the catalyst surface was corroded.