Another, more recent approach, attempts to utilize the control over the intrinsic scintillation process of spontaneous emission to improve scintillation. This approach is based on the Purcell effect to enhance the spontaneous emission by manipulating the local photonic density of states. That is, instead of having an isotropic emission of light due to a high-energy radiation that reaches the scintillator, the emission itself is directional towards the location of the detector through a reduction of the emission into directions which experience total internal reflection between the scintillator and its surrounding materials (usually air). Experimental signatures of such enhancements have been reported in a cathodoluminescence experiment. The fabrication of nanophotonic scintillators also can be easier and low-cost in solution-processable perovskite (structure) scintillators as they can be patterned through nanoimprinting lithography while some perovskite materials with high refractive index already demonstrated strong Purcell effect and spontaneous emission inhibition.