Monolithic electrochromic window manufacturing methods

A method of forming an electrochromic (EC) pane unit, comprising:

• forming a first conductive layer on a first substrate via a solution deposition process;
• forming a first electrically conductive barrier layer on first conductive layer via a sol-gel process or by depositing barrier layer precursors;
• forming a first electrode on the first electrically conductive barrier layer via a solution deposition process;
• forming an electrolyte layer on the first electrode via a sol-gel process;
• forming a second electrode on the electrolyte layer via a solution deposition process;
• forming a second electrically conductive barrier layer on the second electrode via a sol-gel process or by depositing barrier layer precursors;
• and
• forming a second conductive layer on the second electrically conductive barrier layer via a solution deposition process;
• optionally attaching the first substrate to a second substrate;
• and
• forming a low-emissive layer configured to reduce ultraviolet light transmission through the EC pane unit, on one of the first and second substrates, wherein:
• the first electrically conductive barrier layer is configured to prevent electrochemical reactions between the first conductive layer and the first electrode;
• and
• the second electrically conductive barrier layer is configured to prevent electrochemical reactions between the second conductive layer and the second electrode.