논문 해외 국제전문학술지(SCI급) Lossless hybridization between photovoltaic and thermoelectric devices
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2013-07
- 저자명 오민욱
- 학술지명 SCIENTIFIC REPORTS
- 발행처명 NATURE PUBLISHING GROUP
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 11
홈페이지논문 초록 (Abstract)
The optimal hybridization of photovoltaic (PV) and thermoelectric (TE) devices has long been considered ideal for the efficient harnessing solar energy. Our hybrid approach uses full spectrum solar energy via lossless coupling between PV and TE devices while collecting waste energy from thermalization and transmission losses from PV devices. Achieving lossless coupling makes the power output from the hybrid device equal to the sum of the maximum power outputs produced separately from individual PV and TE devices. TE devices need to have low internal resistances enough to convey photo-generated currents without sacrificing the PV fill factor. Concomitantly, a large number of p-n legs are preferred to drive a high Seebeck voltage in TE. Our simple method of attaching a TE device to a PV device has greatly improved the conversion efficiency and power output of the PV device (similar to 30% at a 15 degrees C temperature gradient across a TE device).