An electrochromic coating is produced by adding an organic moiety to a solution of an electrochromic precursor, said organic moiety having a decomposition temperature greater than, or a vapor pressure sufficiently low at, the temperature at which solution solvent is removed, such that said organic moiety...http://www.google.com.au/patents/US5277986?utm_source=gb-gplus-sharePatent US5277986 - Method for depositing high performing electrochromic layers