The proposed innovative technology is a suitable component for a gamma-ray and neutron spectrometer that can be used for Earth science missions, planetary missions, exploration of small cosmic bodies such as asteroids and comets, satellite radio-imaging, and space exploration probes. The nature of the detectors, as having a high signal-to-noise ratio, excellent energy resolution, low power consumption, and resiliency to harsh radiation environments, can open the door for improved gamma and neutron spectroscopy in future NASA planetary missions. The development of the new gamma-ray and neutron detectors has a myriad of applications in the science, homeland security, and medical fields. The AlGaAs SSPM, with its low thermal noise and radiation hardness, makes it an excellent photodetector for scintillation detection of high energy x-rays, gammas, neutrons, and protons in nuclear and high energy physics experiments. The instrument can also be used for detecting and monitoring of radioactive materials for homeland security, and in medical imaging applications such as Postron Emission Tomography and Single Photon Emission Computed Tomography.