Paper by Kevin Ho and coworkers featured on the supplementary cover of ACS Energy Letters!
Ho, K.; Wei, M.; Sargent, E. H.; Walker, G. C. Grain Transformation and Degradation Mechanism of Formamidinium and Cesium Lead Iodide Perovskite under Humidity and Light, ACS Energy Lett. 2020. doi: 10.1021/acsenergylett.0c02247.