Enhanced Infrared Light Harvesting of Inorganic Nanocrystal Photovoltaic and Photodetector on Graphene Electrode
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Date
2011-06-27
Authors
C.-C. Lin
D.-Y. Wang
K.-H. Tu
Y.-T. Jiang
M.-H. Hsieh
Chia-Chun Chen
C.-W. Chen
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Abstract
We demonstrate an enhancement of infrared light harvesting of inorganic PbSnanocrystalphotovoltaic and photodetectordevices based on the transparent grapheneelectrode. Due to high infrared transparency of the grapheneelectrode with respect to indium tin oxide (ITO), the infrared photoresponse of the graphene-based device is superior to the ITO-based counterpart, in spite of a higher sheet resistance of the grapheneelectrode. The outstanding infrared characteristics of the devices based on the grapheneelectrode make it a promising candidate for infrared optoelectronic applications such as solar cells, imaging and sensing, or optical communication.