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Abstract

A light emitting material included in a light emitting device. The light emitting material includes a conjugated polymer having a conjugated part and a blue light emitting compound having a blue light emitting part and satisfies the following formula y≧log₁₀(5.1×x^0.2+1), wherein y represents the amount of light emitted by the blue light emitting compound where the total amount of light emitted by the conjugated polymer and the blue light emitting compound in the light emitting material due to excitation caused by light having a wavelength of 370 nm is 1, and provided that the gram light absorption coefficient of the conjugated polymer and the blue light emitting compound in the light emitting material are expressed by ε₁ and ε₂, and further the content of the blue light emitting compound is expressed by P₂ (parts by mass) where the total content of the conjugated polymer and the blue light emitting compound in the light emitting material is 100 parts by mass, x is defined by the formula: X=(ε2/ε1)×P₂ corresponds to x.

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