Volume 55, Issue 14 pp. 4577-4581
Communication

Flexible Near-Infrared Photovoltaic Devices Based on Plasmonic Hot-Electron Injection into Silicon Nanowire Arrays

Dong Liu

Dong Liu

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei Science Center (CAS), School of Chemistry and Materials Science and, USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Dong Yang

Dong Yang

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei Science Center (CAS), School of Chemistry and Materials Science and, USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Yang Gao

Yang Gao

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei Science Center (CAS), School of Chemistry and Materials Science and, USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

Search for more papers by this author
Jun Ma

Jun Ma

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei Science Center (CAS), School of Chemistry and Materials Science and, USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

Search for more papers by this author
Dr. Ran Long

Dr. Ran Long

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei Science Center (CAS), School of Chemistry and Materials Science and, USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

Search for more papers by this author
Dr. Chengming Wang

Dr. Chengming Wang

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei Science Center (CAS), School of Chemistry and Materials Science and, USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

Search for more papers by this author
Prof. Yujie Xiong

Corresponding Author

Prof. Yujie Xiong

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei Science Center (CAS), School of Chemistry and Materials Science and, USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, Anhui, 230026 P. R. China

Search for more papers by this author
First published: 01 March 2016
Citations: 63

Graphical Abstract

Flexible friend: The quantum efficiency of flexible photovoltaic devices in the near-infrared spectral region has been improved by integrating Si nanowire arrays with plasmonic Ag nanoplates. The Ag nanoplates can directly harvest and convert NIR light into plasmonic hot electrons for injection into Si, while the Si nanowire arrays allow light trapping. The flexible devices show excellent durability over 50 flexing cycles.

Abstract

The development of flexible near-infrared (NIR) photovoltaic (PV) devices containing silicon meets the strong demands for solar utilization, portability, and sustainable manufacture; however, improvements in the NIR light absorption and conversion efficiencies in ultrathin crystalline Si are required. We have developed an approach to improve the quantum efficiency of flexible PV devices in the NIR spectral region by integrating Si nanowire arrays with plasmonic Ag nanoplates. The Ag nanoplates can directly harvest and convert NIR light into plasmonic hot electrons for injection into Si, while the Si nanowire arrays offer light trapping. Taking the wavelength of 800 nm as an example, the external quantum efficiency has been improved by 59 % by the integration Ag nanoplates. This work provides an alternative strategy for the design and fabrication of flexible NIR PVs.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.