AMORPHOUS SILICON CORE-SHELL NANOWIRE Schottky SOLAR CELLS

作者:Zhu Jia*; Xu Yueqing; Wang Qi; Cui Yi
来源:35th IEEE Photovoltaic Specialists Conference, 2010-06-20 to 2010-06-25.

摘要

Nanostructures such as nanoparticles and nanowires have been demonstrated as powerful tools to improve light absorption[1-4], to enable low temperature process[5], to demonstrate multi-exciton generation[6], and to decouple the absorption depth and carrier diffusion length[7, 8]. Here we demonstrated the first amorphous silicon core-shell nanowire solar cells, which can be fabricated through a low temperature, scalable processes. A simple Schottky based nanowire device structure is used to demonstrate the concept[9]. The device demonstrated much higher short circuit current (>150%) compared to the control thin film device, because of improved carrier collection. A core-shell nanowire solar cells based on p-i-n configuration is also proposed to further increase the efficiency. It provides a viable pathway to solve the mismatch between carrier diffusion length and absorption depth in amorphous silicon and to dramatically improve the device performance.

  • 出版日期2010