Home > Press > Next generation perovskite solar cells with new world-record performance
This is the distinguished Prof. Sang-Il Seok of Energy and Chemical Engineering at UNIST. CREDIT Photo by Hong Beom Ahn, Design by HyeJee Park |
Abstract:
A recent study, affiliated with UNIST has presented a new cost-efficient way to produce inorganic-organic hybrid perovskite solar cells (PSCs) which sets a new world-record efficiency performance, in particular photostability. The research team envisions that this method and platform will significantly contribute to accelerate the commercialization of PCSs.
This breakthrough comes from a research, conducted by Distinguished Professor Sang-Il Seok of Energy and Chemical Engineering at UNIST in collaboration with Dr. Seong Sik Shin and Dr. Jun Hong Noh of Korea Research Institute of Chemical Technology (KRICT). Their results, published online in the March issue of the prestigious journal Science, has emerged as the most promising candidate for the next generation high efficiency solar cell technology.
PSCs are made of a mixture of organic molecules and inorganic elements within a single crystalline structure, that together capture light and convert it into electricity. It is an unique crystal structures, consisting of two cations and one anion. They can be fabricated easily and cheaply than silicon-based solar cells, and on a flexible and rigid substrate. Moreover, PSCs reaching a photovoltaic efficiency of 22.1%, comparable to that of single crystalline silicon solar cells (25%), have been attracted much attention as the next-generation solar cells.
Professor Seok has led PSC technology as top scientist in the field. This achievement is based on the previous works (new architecture, process and composition for PSCs) by Professor Sang-Il Seok.
In this study, the research team reported the fabrication of PSCs satisfying both high efficiency (21.2%) and high photostability of the perovskite solar cells with photoelectrode materials (Lanthanum (La)-doped BaSnO3 (LBSO)) synthesized by a very novel method under very mild conditions (below 200°C). They used methylammonium lead iodide (MAPbI3) peorvskite materials for PSCs.
Photostability refers to the ability to withstand exposure to light without a serios degradation. This new material, presented by Professor Seok's research team also retain 93% of its initial performance after 1,000 hours of exposure to sunlight. The synthesis of the photoelectrode material can also proceed at less than 200 ?, which is much lower than that of conventional (high temperature over 900 ?), making fabrication much easier.
In the study, the research team has also proposed a new solar cell manufacturing methodology, entitled 'Hot-Pressing Method'. This method tightly adheres two objects by applying temperature and pressure. It allows the production of low-cost, high efficiency and stable perovskite solar cells.
"This study combines the newly-synthesized photoelectrode material and the hot-pressing method to lower the manufacturing cost to less than half of the existing silicon solar cells," says Professor Seok, corresponding author of the paper. "This study helped us realize PSCs with a steady-state power conversion efficiency of 21.2% and excellent photostability."
He adds, "This achievement, realized by the unique technology of domestic researchers, has surpassed the conventional low-efficiency and stability limit of next-generation solar cell technology."
###
The study has been supported by Global Frontier R&D Program for Multiscale Energy System, Climate Change Program, and Wearable Platform Materials Technology Center through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning.
####
For more information, please click here
Contacts:
JooHyeon Heo
82-522-171-223
Copyright © Ulsan National Institute of Science and Technology (UNIST)
If you have a comment, please Contact us.Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Related Links |
Related News Press |
News and information
Researchers develop artificial building blocks of life March 8th, 2024
Perovskites
Shedding light on unique conduction mechanisms in a new type of perovskite oxide November 17th, 2023
Inverted perovskite solar cell breaks 25% efficiency record: Researchers improve cell efficiency using a combination of molecules to address different November 17th, 2023
Light guide plate based on perovskite nanocomposites November 3rd, 2023
The efficient perovskite cells with a structured anti-reflective layer – another step towards commercialization on a wider scale October 6th, 2023
Govt.-Legislation/Regulation/Funding/Policy
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Researchers’ approach may protect quantum computers from attacks March 8th, 2024
Optically trapped quantum droplets of light can bind together to form macroscopic complexes March 8th, 2024
Possible Futures
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Discoveries
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Researchers’ approach may protect quantum computers from attacks March 8th, 2024
High-tech 'paint' could spare patients repeated surgeries March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Materials/Metamaterials/Magnetoresistance
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Focused ion beam technology: A single tool for a wide range of applications January 12th, 2024
Announcements
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Researchers develop artificial building blocks of life March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Energy
Development of zinc oxide nanopagoda array photoelectrode: photoelectrochemical water-splitting hydrogen production January 12th, 2024
Shedding light on unique conduction mechanisms in a new type of perovskite oxide November 17th, 2023
Inverted perovskite solar cell breaks 25% efficiency record: Researchers improve cell efficiency using a combination of molecules to address different November 17th, 2023
The efficient perovskite cells with a structured anti-reflective layer – another step towards commercialization on a wider scale October 6th, 2023
Solar/Photovoltaic
Development of zinc oxide nanopagoda array photoelectrode: photoelectrochemical water-splitting hydrogen production January 12th, 2024
Shedding light on unique conduction mechanisms in a new type of perovskite oxide November 17th, 2023
Inverted perovskite solar cell breaks 25% efficiency record: Researchers improve cell efficiency using a combination of molecules to address different November 17th, 2023
Charged “molecular beasts” the basis for new compounds: Researchers at Leipzig University use “aggressive” fragments of molecular ions for chemical synthesis November 3rd, 2023
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||