http://ift.tt/hZ0OVi
Engineers are shining new light on an emerging family of solar-absorbing materials that could clear the way for cheaper and more efficient solar panels and LEDs.
The materials, called perovskites, are particularly good at absorbing visible light, but had never been studied in their purest form: as perfect single crystals.
Using a new technique, researchers grew large, pure perovskite crystals and studied how electrons move through the material as light is converted to electricity.
The team used a combination of laser-based techniques to measure selected properties of the perovskite crystals. By tracking down the ultrafast motion of electrons in the material, they have been able to measure the diffusion length—how far electrons can travel without getting trapped by imperfections in the material—as well as mobility—how fast the electrons can move through the material.
Science - Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals
Read more »
Reposted via Next Big Future
Engineers are shining new light on an emerging family of solar-absorbing materials that could clear the way for cheaper and more efficient solar panels and LEDs.
The materials, called perovskites, are particularly good at absorbing visible light, but had never been studied in their purest form: as perfect single crystals.
Using a new technique, researchers grew large, pure perovskite crystals and studied how electrons move through the material as light is converted to electricity.
The team used a combination of laser-based techniques to measure selected properties of the perovskite crystals. By tracking down the ultrafast motion of electrons in the material, they have been able to measure the diffusion length—how far electrons can travel without getting trapped by imperfections in the material—as well as mobility—how fast the electrons can move through the material.
Science - Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals
Read more »
Reposted via Next Big Future
No comments:
Post a Comment