Efficient 1.55 micrometer light sources are needed for telecom and infrared photonics, but realizing them with perovskite quantum dots is challenging due to bandgap limitations. Li et al. used Er3 + ...

I've tested everything from TVs to phones, PCs, tablets and more. As a tech editor and Imaging Science Foundation Level One-certified calibrator, I’ve tested dozens of TVs over the past seven ...