Preparation of Polyimide/Zinc Oxide Nanocomposite Films via an Ion-Exchange Technique and Their Photoluminescence Properties

Figure 2

Photograph of (a) the bare PI film, (b) the KOH hydrolyzed film, (c) the Zn²⁺-doped film and the PI composite films obtained at 350°C for (d) 0, (e) 1, (f) 2, (g) 3, (h) 4, (i) 5, and (j) 7 h.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)