The Stanford Environmental Chamber is designed specifically for imaging heat-based degradation of full solar devices as well as perovskite films produced via the rapid spray plasma processing (RSPP) method . Additionally, the chamber can compare devices produced with other common fabrication techniques like spin coating with RSPP perovskite films. The chamber maintains RGB color as a means to characterize thermal degradation pathways in the perovskite thin-film solar devices similar to the first generation chamber; however, to exclude other degradation pathways, the chamber is constructed to be assembled in a glove box under nitrogen atmosphere and fully enclosed to prevent light impingement from external sources (windows, glove box lights, room lighting, etc.). The heat is applied directly to the films placed against a hotplate at the accelerated degradation temperature (generally 85 ℃).