Patent ID: 8574953

Claim:
A method of preparing a field-effect transistor of the type having a source region and a drain region, a channel layer extending between the source region and the drain region, the channel layer including a semiconducting organic-inorganic hybrid material, a gate region disposed in spaced adjacency to the channel layer, an electrically insulating layer between the gate region and the source region, drain region and channel layer, which comprises: preparing a channel layer comprising a melt-processed semiconducting perovskite organic-inorganic hybrid material at a temperature above the melting point but below the decomposition temperature of said perovskite organic-inorganic hybrid material for a period of time sufficient to form a uniform melt; and cooling said uniform melt to an ambient temperature under condition sufficient to produce said melt-processed perovskite organic-inorganic hybrid material, wherein the perovskite organic-inorganic hybrid material has a fixed ratio of each organic component and inorganic component and wherein both the organic component and inorganic component manifest forces that enable a self assembly there between into a predictable arrangement.