Current matched improving of triple-junctions GaAs-Based solar cell using periodic patterns incorporated with indium nanoparticle plasmonics

We demonstrate experimentally the improvement of the external quantum efficiency (EQE) and current-matching of the triple-junction GaAs-based solar cell using periodic-patterns incorporated with random nano-sized indium-nanoparticles plasmonics. The average EQE decreased of -9.8% in top-cell and increased of +2.4% in middle-cell were obtained as the solar cell with periodic-patterns random nano-size indium-nanoparticles. Thus, photocurrent generated in the current-limited middle-cell was improved of ~3.4% and the conversion-efficiency was enhanced of ~3.0%, which current matching was also achieved under 1-sun AM1.5G illumination.