Abstract: An inspection is performed using a captured image obtained by irradiating, with blue light, an optical wavelength conversion sheet that includes a quantum dot layer which contains a quantum dot emitting red light and green light by receiving blue light with blue light from a back surface side and imaging from a front surface side with a camera. A filter which cuts the blue light and transmits the red light and the green light is disposed between the camera and the optical wavelength conversion sheet.

Abstract: A method for selecting a combination of a host material and a light-emitting material to be used for a light-emitting layer of an organic light-emitting device, involving the steps of: (a) disposing a mixture film containing a host material and a light-emitting material on a substrate; and (b) evaluating the mixture film with respect to light-emitting properties while irradiating a light that is absorbed by the host material to the mixture film. An organic light-emitting device with a light-emitting layer containing the combination of the host material and the light-emitting material selected by the method is also provided.

Abstract: A method for selecting a combination of a host material and a light-emitting material to be used for a light-emitting layer of an organic light-emitting device, comprising the steps of: (a) disposing a mixture film containing a host material and a light-emitting material on a substrate; and (b) evaluating the mixture film with respect to light-emitting properties while irradiating a light that is absorbed by the host material to the mixture film. An organic light-emitting device comprising a light-emitting layer containing the combination of the host material and the light-emitting material selected by the method is also provided.