Enhanced Photocurrent Generation at a Spiro-OMeTAD/AuNPs-TiO2 Interface with Grating-coupled Surface Plasmon Excitation. - Hathaithip Ninsonti; Kazuma Hara; Supeera Nootchanat; Weerasak Chomkitichai; Akira Baba; Sukon Phanichphant; Kazunari Shinbo; Keizo Kato; Futao Kaneko (IEICE Trans. Electron., 2015)