[7p-PA7-1~25] 9.2 Nanowires and Nanoparticles

▲ [7p-PA7-22] Pencil-shaped Silicon Nanowires and their Photovoltaic Applications

〇Wipakorn Jevasuwan¹, Junyi Chen¹, Thiyagu Subramani¹, Ken C. Pradel¹, Toshiaki Takei¹, Kotaro Dai², Kei Shinotsuka², Yoshihisa Hatta², Naoki Fukata¹ (1.NIMS, 2.Oji Holdings Corp.)

Keywords:nanowire, synthesis, photovoltaic

Pencil-shaped silicon nanowires (SiNWs) were synthesized by colloidal lithography and inductively coupled plasma reactive ion etching (ICP-RIE) for photovoltaic applications. Light reflectance of below 10% could be obtained by the array of asymmetric SiNW structure. The structural and optical properties including device performances compared to SiNW structures synthesized by metal catalyzed electroless etching (MCEE) and nanoimprinting techniques were observed. Good crystal quality and surface of pencil-shaped SiNWs provided an excellent solar cell junction interface. The great light trapping of their SiNW-based solar cells could enhance the conversion efficiency to 8.5%.