Info
Info
News Article

Towards Lead-free Stable Perovskite Solar Cells

News

HZB collaboration adds phenylethylammonium chloride (PEACl) to perovskite layers

An international cooperation led by Antonio Abate, at Helmholtz-Zentrum Berlin (HZB), and Zhao-Kui Wang, at Soochow University, China, has achieved a breakthrough that opens up a path to non-toxic perovskite-based solar cells that provides stable performance over a long period. They published the results in the journal ACS Energy Letters.

Halogenide perovskites with tin instead of lead should show excellent optical properties, but in practice, their efficiencies are mediocre and decrease rapidly. And this rapid ageing is their main disadvantage: the tin cations in the perovskite structure react very quickly with oxygen from the environment so that their efficiency drops.

The team still use tin instead of lead but have created a 2D structure by inserting organic groups within the material, which leads to so-called 2D Ruddlesden-Popper phases.

"We use phenylethylammonium chloride (PEACl) as an additive to the perovskite layers. Then we carry out a heat treatment while the PEACl molecules migrate into the perovskite layer. This results in vertically ordered stacks of 2D perovskite crystals," explains first author Meng Li. Li is a postdoc in Abate's group and has organised the close cooperation with the Chinese partners. At the Shanghai Synchrotron Radiation Facility (SSRF), they were able to precisely analyse the morphology and crystal characteristics of the perovskite films after different annealing treatments.

The illustration shows the changes in the structure of FASnI3:PEACl films during treatment at different temperatures.

The best of these lead-free perovskite solar cells achieved an efficiency of 9.1 percent and high stability values, both under daytime conditions and in the dark. The PEACl molecules accumulate between the crystalline perovskite layers as a result of the heat treatment and form a barrier that prevents the tin cations from oxidising. "This work paves the way for more efficient and stable lead-free perovskite solar cells," Abate is convinced.

'Tin halide perovskite films made of highly oriented 2D crystals enable more efficient and stable lead-free perovskite solar cells' by Meng Li et al; ACS Energy Lett. 2020

Ingeteam Supplies Solar Inverters For PV Project Of More Than 100MW In Chile
SunBrush Mobil Delivers Its New Cleaning Device For PV Tracking Systems To Chile
BayWa R.e. Sells Subsidy-free Solar Farm In Spain To Commerz Real’s Impact Fund Klimavest
EnergyLink3 And C4V Lead Tesla In Race To Less Toxic Mobile Battery Solution
UK'S Largest Battery Ready To Balance The Grid
Faber Infrastructure Launches Container-based Power Supply
Dr Armin Froitzheim Becomes SOLARWATT Chief Technology Officer
BISOL Supreme Facing Exceptional Sales
Everoze Creates Skyray To Design And Engineer Great Solar PV Projects
Sonnedix Named ESG Global Solar Power Generation Sector Leader By GRESB
New Energy Scout GmbH Becomes Part Of Basler & Hofmann AG
Researchers Pinpoint Way To Improve CIGS Solar Cells
Azelio And JET ENERGY In MoU To Develop Storage Projects With Solar PV In Africa
ENGIE And Kiwi Power Enter Netherlands’ Grid Flexibility Market
Midsummer’s Solar Cells Can Reduce Truck Fuel Emissions By Up To 20 Percent
EnBW Chooses Delta Inverters For 2.62 MWp Solar Farm In Kenzingen
What Role Can Solar Energy Play In Enabling A Better Future And Meeting The UN Sustainable Development Goals?
Midsummer And Rollgum Corp Team Up To Bring Solar Roofs To The Iberian Peninsula
Sunstore Solar Launches WattGrid, A New Range Of Turnkey Off-grid Power Systems
New Innovation Set To Change Renewable Energy Market
Solar Power As Rental Offer Launched By Aggreko
NextEnergy Capital Acquires Its First Asset In Portugal 17.4MWp Solar PV Project
Luxcara Acquires Largest Independent PV Project In Germany From BELECTRIC
A Promising Boost To Kesterite Solar Cells

Info
Info
×
Search the news archive

To close this popup you can press escape or click the close icon.
Logo
×
Logo
×
Register - Step 1

You may choose to subscribe to the Solar + Power Magazine, the Solar + Power Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
X
Info
X
Info
{taasPodcastNotification}