Summary: | An amorphous precursor of Cr<sub>2</sub>O<sub>3</sub> pigment was prepared via solution combustion synthesis. After calcination at 1000 °C for 1.0 h, the precursor was converted into well-crystallized submicron Cr<sub>2</sub>O<sub>3</sub> crystals with uniform particle distribution and low aggregation. Furthermore, Ti, Co, and Fe were doped into the lattice of Cr<sub>2</sub>O<sub>3</sub>, and the effects of these dopants on the reflectance spectroscopy modulation as well as chromatic properties were investigated in detail. As a result, a series of Cr<sub>2</sub>O<sub>3</sub> pigment samples sharing similar spectra within the wavelength from 400 to 1600 nm with green plants could be successfully fabricated.
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