標題: Non-reciprocal meta-surfaces for nanophtonic light trapping: optical isolators versus solar cells
作者: Fu, Sze Ming
Zhong, Yan Kai
Yan, Sheng Lun
Ju, Nyan Ping
Chen, Po Yu
Kao, Ming-Hsuan
Shen, Chang-Hong
Shieh, Jia-Min
Lai, Yi-Chun
Yu, Peichen
Lin, Albert
電子工程學系及電子研究所
光電工程學系
Department of Electronics Engineering and Institute of Electronics
Department of Photonics
關鍵字: amorphous materials;charge carrier lifetime;photovoltaic cells;silicon
公開日期: 2015
摘要: Nano-photonic concept has been shown to be very effective for boosting solar cell conversion efficiency. In this work, the novel concepts of non-reciprocality and chiral meta-surface are demonstrated to be very useful for photovoltaics. The asymmetric chiral patterns are designed and optimized using genetic algorithm. The enhanced optical absorption is observed and it is attributed to the non-reciprocal nature of the solar cell front meta-surface. The asymmetric solar cell front surface enhances the anti-reflection and, at the same time, forbids the photon escape once it enters the devices. This concept is very similar to optical isolators where one-way transmission is intentionally designed for enhanced optical diode effect. Preliminary experimental results are supplied to confirm the superiority of asymmetric chiral design. The ongoing experimental effort is adjusting the PECVD deposition conditions to boost the efficiency on patterned substrates.
URI: http://hdl.handle.net/11536/135918
ISBN: 978-1-4799-7944-8
ISSN: 0160-8371
期刊: 2015 IEEE 42ND PHOTOVOLTAIC SPECIALIST CONFERENCE (PVSC)
顯示於類別:會議論文