Assertion: diode's layer | /r/HasProperty | added
Facets:
value: typically
type: DEGREE
value: in order to confine light
type: PURPOSE
Source sentences:
text: The middle layer in a quantum well laser can be too thin to confine light, so additional layers with a low refractive index have to be added in order to effectively confine light.
text: A second conductive (injection) layer is typically added, which may consist of PEDOT: