Redox-mediated reversible modulation of the photoluminescence of single quantum dots

Li Ying^a), Liu Ren-Wei^a),^b), Ma Li^a), Fan Su-Na^a),^b), Li Hui^a), Hu Shu-Xin†^a), Li Ming^a)

(a) Sketch of the experimental setup. (b) A typical PL trajectory of a single QD before and after the addition of 100 mM BME. The electrode potential is varied from 0 V to +1.2 V and then back to −1.2 V after the addition of BME.