Enhancing the Performance of Quasi-2D Perovskite Light-Emitting Diodes Using Natural Cyclic Molecules with Distinct Phase Regulation Behaviors.

In this study, two natural small molecules, α-cyclodextrin (α-CD) and β-cyclodextrin (β-CD), are used as additives to improve the performance of quasi-2D PEACsPbBr ( = 3, herein) PeLEDs. Both of them are shown to efficiently passivate the quasi-2D perovskite films to afford improved film quality and morphology, but they exhibit distinct phase regulation behaviors possibly due to their different pore sizes. It reveals that α-CD effectively suppresses the formation of the low- phases ( ≤ 2), while β-CD better regulates the phase with a medium- value ( = 3).

Development of a home-based telehealthcare model for improving the effectiveness of the chronic care of stroke patients.

This study describes the development of an information technology (IT)-mediated home-based healthcare model designed to improve the effectiveness of caring for stroke patients who require chronic, home care. This model was evaluated at Kaohsiung Medical Hospital in Taiwan between 2005 and 2008; 84 newly diagnosed stroke patients diagnosed as the chronic covalence stage were enrolled for preliminary testing of this model. These patients required 24-hour in-home monitoring of their health status and emergency call service.