Enhanced infrared light harvesting of inorganic nanocrystal photovoltaic and photodetector on graphene electrode

Chih Cheng Lin, Di Yan Wang, Kun Hua Tu, You Ting Jiang, Meng Hsiang Hsieh, Chia Chun Chen, Chun Wei Chen

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We demonstrate an enhancement of infrared light harvesting of inorganic PbS nanocrystal photovoltaic and photodetector devices based on the transparent graphene electrode. Due to high infrared transparency of the graphene electrode 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 graphene electrode. The outstanding infrared characteristics of the devices based on the graphene electrode make it a promising candidate for infrared optoelectronic applications such as solar cells, imaging and sensing, or optical communication.

Original languageEnglish
Article number263509
JournalApplied Physics Letters
Issue number26
Publication statusPublished - 2011 Jun 27


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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