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Published on: July 2, 2012
Near-infrared response of all-solid-state photodetector cells based on plasmon-induced charge separation at the
Yukina Takahashi1,2,3, Kaho Yamamoto4
1International Institute for Carbon Neutral Energy Research (I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan. yukina@mail.cstm.kyushu-u.ac.jp.
Abstract:
Silver nanoplates (AgPLs) enabled efficient near-infrared (NIR) photoresponse in all-solid-state p-type plasmon-induced charge separation (PICS) cells. Changing the shape of silver nanoparticles from spherical to triangular plates results in a 15.7-fold higher NIR photocurrent. The results demonstrate broadband light harvesting and reveal the critical roles of semiconductor conductivity and interfacial recombination in determining device performance.
