Synergistic effects of electrical and optical excitations on TiO2 resistive device
Mao Qi1, 2, †, Lin Wei-Jian1, Zhu Ke-Jian1, Meng Yang1, 2, Zhao Hong-Wu1, 2, ‡
       

(color online) (a) Schematics of ITO/TiO2/ITO/Au devices A and B. (b) IV curves for devices A (solid triangle) and B (solid circle), respectively, where inset shows the equivalent circuit consisting of two back-to-back diodes in series.