In certain embodiments, outcoupling members or structures may also be included. In certain embodiments, they can be distributed across a surface of the substrate opposite the color conversion material CCM and/or in features in a layer including features including color conversion material CCM. In certain preferred embodiments, such distribution is uniform or substantially uniform. In certain embodiments, coupling members or structures may vary in shape, size, and/or frequency in order to achieve a more uniform light distribution. In certain embodiments, coupling members or structures may be positive, i.e., sitting above the surface of the substrate, or negative, i.e., depressed into the surface of the substrate, or a combination of both. In certain embodiments, one or more features comprising a color conversion material CCM can be applied to a surface of a positive coupling member or structure and/or within a negative coupling member or structure.