TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The dopant ink composition further comprises many particles, where the bound dopant species is bound or coupled to at least one of the particles. Preferred Components: The bound dopant species is: bound to the crosslinkable matrix precursor; an n-type dopant precursor bound to the crosslinkable matrix precursor through a chemical bond, where the n-type dopant precursor comprises a phosphine moiety or an organophosphine moiety; and a p-type dopant precursor bound to the crosslinkable matrix precursor through a chemical bond, where the p-type dopant precursor comprises a borane moiety or an organoborane moiety. The bound dopant species is an n-type or a p-type dopant atom incorporated into one of the particles, or an n-type or a p-type dopant precursor bound or tethered to a surface of one of the particles through a chemical bond. The crosslinkable matrix precursor is a siloxane species, a silane species or cyclosilane species. Preferred Method: The step of delivering the dopant ink composition comprises using a fluid deposition technique comprising ink-jetting, screen printing, blading, transferring by pipette, spin coating and etching, gravure printing or slot-die coating. The step of baking the dopant ink composition comprises heating to 100-400 degrees C, the step of curing the baked dopant ink composition comprises heating to 350-900 degrees C, and the step of driving dopants from the cured dopant ink composition comprises heating to 850-1050 degrees C. The baking and the curing steps are performed in the same process operation. The dopant ink composition is a first dopant ink composition for a first conductivity type. The method further comprises prior to baking the first dopant ink composition, subsequent to baking but prior to curing the first dopant ink composition, or subsequent to baking and curing steps but prior to driving dopants from the first dopant ink composition, delivering a second dopant ink composition for a second, different, conductivity type to a second region above the substrate. The first dopant ink composition and the second dopant ink composition are delivered sequentially or substantially simultaneously. The region is: an upper surface of the substrate, and the step of driving dopants from the cured dopant ink composition toward the substrate comprises driving dopants into the substrate; and an upper surface of a semiconductor layer (620) disposed above the substrate, and the step of driving dopants from the cured dopant ink composition toward the substrate comprises driving dopants into the semiconductor layer.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solvent is an alkyl-based alcohol, an aryl-based alcohol, decalin, an alkane, an aromatic, an ethyl acetate species or water. The crosslinkable matrix precursor is dissolved in the solvent. EXAMPLE - No suitable example given.