Device and method for determining the photoluminescence quantum yield and other optical characteristics of a sample

摘要

The device has an integrating sphere (26), and a sample holder for holding a sample (28) in a middle point of the sphere. First and second mirrors are fixed with respect to the sphere, and a third mirror is rotatably supported. The mirrors are arranged such that light emitted by a lamp (10) is reflected from the third mirror to the first mirror and from the first mirror to the sphere in an angular position of the third mirror, and reflected from the third mirror to the second mirror and from the second mirror to the sphere in another angular position of the third mirror. An independent claim is also included for a method for determining luminescence quantum efficiency and optical characteristics of a sample.