new lightconverting materials solar leds
Last Updated : GMT 09:03:51
Almaghrib Today, almaghrib today
Almaghrib Today, almaghrib today
Last Updated : GMT 09:03:51
Almaghrib Today, almaghrib today

New light-converting materials, solar, LEDs

Almaghrib Today, almaghrib today

Almaghrib Today, almaghrib today New light-converting materials, solar, LEDs

New light materials
Tehran - FNA

Engineers shone 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 thoroughly 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.
Led by Professor Ted Sargent of The Edward S. Rogers Sr. Department of Electrical & Computer Engineering at the University of Toronto and Professor Osman Bakr of the King Abdullah University of Science and Technology (KAUST), the team used a combination of laser-based techniques to measure selected properties of the perovskite crystals. By tracking down the rapid motion of electrons in the material, they have been able to determine 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. Their work was published this week in the journal Science.
"Our work identifies the bar for the ultimate solar energy-harvesting potential of perovskites," says Riccardo Comin, a post-doctoral fellow with the Sargent Group. "With these materials it's been a race to try to get record efficiencies, and our results indicate that progress is slated to continue without slowing down.."
In recent years, perovskite efficiency has soared to certified efficiencies of just over 20 per cent, beginning to approach the present-day performance of commercial-grade silicon-based solar panels mounted in Spanish deserts and on Californian roofs. "In their efficiency, perovskites are closely approaching conventional materials that have already been commercialized," says Valerio Adinolfi, a PhD candidate in the Sargent Group and co-first author on the paper. "They have the potential to offer further progress on reducing the cost of solar electricity in light of their convenient manufacturability from a liquid chemical precursor."
The study has obvious implications for green energy, but may also enable innovations in lighting. Think of a solar panel made of perovskite crystals as a fancy slab of glass: light hits the crystal surface and gets absorbed, exciting electrons in the material. Those electrons travel easily through the crystal to electrical contacts on its underside, where they are collected in the form of electric current. Now imagine the sequence in reverse -- power the slab with electricity, inject electrons, and release energy as light. A more efficient electricity-to-light conversion means perovskites could open new frontiers for energy-efficient LEDs.
Parallel work in the Sargent Group focuses on improving nano-engineered solar-absorbing particles called colloidal quantum dots. "Perovskites are great visible-light harvesters, and quantum dots are great for infrared," says Professor Sargent. "The materials are highly complementary in solar energy harvesting in view of the sun's broad visible and infrared power spectrum."
"In future, we will explore the opportunities for stacking together complementary absorbent materials," says Dr. Comin. "There are very promising prospects for combining perovskite work and quantum dot work for further boosting the efficiency."

almaghribtoday
almaghribtoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

new lightconverting materials solar leds new lightconverting materials solar leds

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

new lightconverting materials solar leds new lightconverting materials solar leds

 



Almaghrib Today, almaghrib today Skincare PR Performance Full Year 2017

GMT 09:22 2018 Monday ,22 January

Skincare PR Performance Full Year 2017
Almaghrib Today, almaghrib today New hunt for flight MH370 gets under way

GMT 11:03 2018 Wednesday ,24 January

New hunt for flight MH370 gets under way
Almaghrib Today, almaghrib today Modern colorful bedroom renovation

GMT 10:57 2017 Thursday ,21 December

Modern colorful bedroom renovation
Almaghrib Today, almaghrib today Puigdemont candidate for Catalan president

GMT 13:56 2018 Tuesday ,23 January

Puigdemont candidate for Catalan president
Almaghrib Today, almaghrib today Turkey detains dozens more

GMT 10:47 2018 Wednesday ,24 January

Turkey detains dozens more

GMT 03:58 2016 Saturday ,30 July

9 killed as building collapses in western India

GMT 09:35 2017 Thursday ,27 April

UAE delegation meet Pope Francis

GMT 12:34 2017 Sunday ,05 February

Footballer hoped to participate in Super match

GMT 10:48 2017 Thursday ,22 June

Combustible cladding found in UK tower blocks

GMT 03:48 2012 Sunday ,15 April

100 years of Santos magic

GMT 00:26 2012 Friday ,13 January

The Road to Tahrir Square

GMT 09:12 2017 Tuesday ,12 December

Ronaldo v Neymar as Real draw PSG

GMT 12:11 2012 Friday ,01 June

We test diet deliveries in Dubai

GMT 14:38 2017 Saturday ,18 November

Year-end top ranking not realistic

GMT 10:10 2015 Thursday ,24 December

Celebrity chefs create gourmet delights

GMT 10:17 2017 Sunday ,13 August

BAB introduces BIBF to its members

GMT 12:01 2013 Saturday ,16 February

Flu outbreaks updated daily

GMT 10:50 2012 Thursday ,14 June

Tamer Hosni to marry a Moroccan girl

GMT 13:17 2012 Wednesday ,04 January

Israel has hindered judicial performance

GMT 00:25 2012 Saturday ,28 January

In the Orchard, the Swallows
Almaghrib Today, almaghrib today
 
 Almaghrib Today Facebook,almaghrib today facebook  Almaghrib Today Twitter,almaghrib today twitter Almaghrib Today Rss,almaghrib today rss  Almaghrib Today Youtube,almaghrib today youtube  Almaghrib Today Youtube,almaghrib today youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2025 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2025 ©

.almaghribtoday .almaghribtoday .almaghribtoday .almaghribtoday
almaghribtoday almaghribtoday almaghribtoday
almaghribtoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
almaghribtoday, Almaghribtoday, Almaghribtoday