The External Light Trapping Using Down-Conversion Polymer and Diffuse Trench Reflectors

Albert Lin*, Hau Vei Han, Chien Yao Huang, Bo Ruei Chen, Sze Ming Fu, Yan Kai Zhong, Ming Hsuan Kao, Chang Hong Shen, Jia Min Shieh, Chien-Chung Lin, Hao-Chung Kuo, Tseung-Yuen Tseng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

External light trapping has been proposed as an alternative to internal light trapping. The advantage is that the electrical and optical characteristics can be designed separately. This enhances the degree of improvement that nano-photonics can contribute to the solar cell efficiency and J(SC). In this work, we use diffuse trench reflectors with down-conversion polymer to demonstrate the concepts of a low-cost, widely applicable scheme for the external light trap. A >50% enhancement of the J(SC) can be observed with proper designs and configurations. The proposed external light trap can be applied to nearly all thin-film solar cell technologies since the external optical components do not affect the electrical diode characteristic of the solar cells. The efficient external light trap is attributed to the high reflectance of the disuse mirror and its wide-angle diffractions, optical confinement due to the trench reflector, and the additional short-wavelength spectral enhancement by the down-conversion mechanism.

Original languageEnglish
Title of host publication2016 IEEE 43RD PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages338-341
Number of pages4
ISBN (Electronic)9781509027248
DOIs
StatePublished - 5 Jun 2016
Event43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States
Duration: 5 Jun 201610 Jun 2016

Publication series

NameIEEE Photovoltaic Specialists Conference
PublisherIEEE
ISSN (Print)0160-8371

Conference

Conference43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
CountryUnited States
CityPortland
Period5/06/1610/06/16

Keywords

  • external light trapping
  • diffuse trench reflectors
  • down-conversion
  • solar cells

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    Lin, A., Han, H. V., Huang, C. Y., Chen, B. R., Fu, S. M., Zhong, Y. K., Kao, M. H., Shen, C. H., Shieh, J. M., Lin, C-C., Kuo, H-C., & Tseng, T-Y. (2016). The External Light Trapping Using Down-Conversion Polymer and Diffuse Trench Reflectors. In 2016 IEEE 43RD PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC) (pp. 338-341). (IEEE Photovoltaic Specialists Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2017.8366837, https://doi.org/10.1109/PVSC.2016.7749606