Apr

15

2D Perovskites May Make Better LEDs and Solar Cells

April 15, 2021 | 1 Comment

Open Image…Save ImageOpen Image (using #TmpD/ia)… University of Surrey engineers’ innovative analysis of two-dimensional (2D) materials could boost the development of next-generation solar cells and LEDs. Three-dimensional perovskites have proved themselves remarkably successful materials for LED devices and solar panels in the past decade. One key issue with these materials, however, is their stability, with device performance decreasing quicker than […]

Apr

7

New Device Relays Sunlight To The Dark Deep Places

April 7, 2021 | Leave a Comment

Open Image…Save ImageOpen Image (using #TmpD/ia)… A Nanyang Technological University, Singapore (NTU Singapore) team of researchers has designed a ‘smart’ device to harvest daylight and relay it to underground spaces, reducing the need to draw on traditional energy sources for lighting. In Singapore, authorities are looking at the feasibility of digging deeper underground to create new space for infrastructure, storage, […]

Dec

30

Hybrid Perovskites Properties Become Better Understood

December 30, 2020 | Leave a Comment

Kobe University’s Associate Professor Tachikawa Takashi and Dr. Karimata Izuru have succeeded in completely substituting the halide ions of perovskite nanocrystals (see #1 below) while maintaining their morphology and light-emitting efficiency. Hybrid organic-inorganic perovskites (see #2 below) have received much attention as potential next generation solar cells and as materials for light-emitting devices. By using […]

Nov

4

Imperfect Polymer LEDs Are More Efficient

November 4, 2020 | Leave a Comment

Physicists in China, led by Yadong Wang at Hebei North University, found that higher-than-expected efficiency can be reached through interactions between triplet excitons, and impurities embedded in the LED polymer. Molecular dynamics simulations have shown that the mysteriously high efficiency of polymer LEDs arises from interactions between triplet excitons in their polymer chains, and unpaired […]

Sep

2

Tiny LED Is Way More Efficient and Can Be A Laser Too

September 2, 2020 | Leave a Comment

Open Image…Save ImageOpen Image (using #TmpD/ia)… The National Institute of Standards and Technology (NIST) has a new design for light-emitting diodes that achieves a dramatic increase in brightness as well as the ability to create laser light. These characteristics could make it valuable in a range of applications. The device shows an increase in brightness of 100 to 1,000 times […]

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