Fig. 22. Symbolic diagram showing the preparation of SnO2 thin layers using (a) spin coating (SC) and (b) chemical bath deposition (CBD). (c) Top-view SEM pictures of SnO2 films prepared by atomic layer deposition (ALD), (d) spin coating (SC), and (e) spin coating and chemical bath deposition (SC-CBD). All scale bars are 200 nm (reproduced with permission from ref. 74. Copyright 2016 RSC).
