Strain to stabilize metal halide PERovSkites: an Integrated effort from fundamentalS to opto-elec-tronic applicaTions (PERsist). (PERsist)

Light detection and emission are crucial for displays, medical and security scanners. Given the societal relevance, there is an emerging need for novel opto-electronic materials with higher conversion effi-ciency and lower production cost. Metal halide perovskites (MHPs) are promising high-performance semiconductors due to their strong absorption and emission in a broad spectral range and their ease of manufacturing. So far, integration in opto-electronic devices was hampered by inherent stability issues such as the degradation from the optically active “black” phase into an inactive phase. Based on our recent proof-of-concept, we will explore a fundamentally new paradigm to stabilize the black phase under ambient conditions. This innovative concept exploits strain engineering, with MHP thin films fixed to substrates and/or patterned at the nano- to micrometer scale. PERsist builds on the syn-ergy between leading experts in high-end micro/spectroscopy & modelling of nanomaterials.

Keywords:Metal halide perovskites, Opto-electronic materials, Structure-function-stability relationshi, Materials engineering, Materials characterization

Disciplines:Photonics, optoelectronics and optical communications, Solid state chemistry, Chemistry of clusters, colloids and nanomaterials, Theoretical and computational chemistry not elsewhere classified, Condensed matter physics and nanophysics not elsewhere classified