DOI: 10.1063/5.0355057 ISSN: 0021-8979
Direct optical thermometry in semiconductors
N. Roubinowitz, T. Vezin, M. Legrand, S. Der, B. Yu Jeco-Espaldon, S. Rani, M. Giteau, Y. Okada, J. F. Guillemoles, S. Houver, D. SuchetThis pedagogical review offers an easy access to three direct optical methods (photoluminescence, absorption, and Raman spectroscopies) to probe temperatures in out-of-equilibrium semiconductor devices. For each technique, starting from basic considerations, the operating principles and usual assumptions are clarified; the strategy to acquire and analyze data is explained, and the most critical points of attention are underlined with examples. Decision trees and a comparison table are provided to help identify the best suited approach to specific characterization needs.