Loading...
News Article

Laminates improve perovskite PV performance

News
Researchers use innovative 3-ply interface to enhance stability and conversion efficiency

A collaborative research team from the Hong Kong University of Science and Technology (HKUST) and the Hong Kong Polytechnic University (PolyU) has developed an innovative laminated interface microstructure that enhances the stability and photoelectric conversion efficiency of inverted perovskite solar cells.

The team’s research findings have been published in Nature Synthesis, in a paper titled 'Synthesis of a Lattice-Resolved Laminate-Structured Perovskite Heterointerface'.

The basic structures of perovskite solar cells are classified into two types: standard and inverted. The inverted structure demonstrates better application prospects because the electronic materials used in each layer are more stable compared to those in the standard configuration.

However, challenges related to interface science still exist in inverted devices, particularly concerning defect accumulation at the interface between the fullerene-based electron transport layer and the perovskite surface. This defect accumulation significantly impacts the device’s performance and stability.

Zhou Yuanyuan, associate professor in the department of chemical and biological engineering (CBE) and associate director of the Energy Institute at HKUST and Cai Songhua’s team from the department of Applied Physics at PolyU have shown that uniformly creating a 'molecular passivation layer-fullerene derivative layer-2D perovskite layer' — a three-ply laminated structure on the surface of the perovskite film — they could effectively reduce the density of interface defects and improve energy level alignment.

This advancement substantially boosts the photoelectric conversion efficiency of the perovskite solar cell and enhances the durability of the interface under damp-heat and light soaking conditions.

They report conversion efficiencies up to 25.97 percent, together with enhanced device stabilities under protocols standardised by the International Summit on Organic Photovoltaic Stability, showing T90 lifetimes (the time at which they maintain 90 percent of their efficiency) of over 1,000 h in both the damp-heat test (85 °C, 85 percent relative humidity) and maximum power point tracking under one-sun illumination.

Guo Pengfei, co-first author of this work and a postdoctoral fellow at HKUST’s CBE Department, said, “We introduced the concept of composite materials into the interface design of optoelectronic devices, allowing the synergistic effects of each layer in this new interface to achieve results that are unattainable with traditional interface engineering.”

Yuanyuan, the lead corresponding author of the study, added, “Perovskite is a soft lattice material. We can create microstructural features in this type of material that are difficult to achieve with conventional materials. Our aim is to understand the formation and mechanisms of these microstructures at the nanoscale, or even at the atomic scale, to drive device innovation based on this fundamental understanding.”

Pictured above: Schematic diagram of the synthesis method of laminated-structured perovskite interface and its structure revealed by transmission electron microscopy.

RES reaches 28GW and calls for modern grids to meet global energy needs
Laminates improve perovskite PV performance
Komatsu UK Partners with AR Power to Install Solar PV System
Kona Energy secures £40 million capacity market contract
Stor-Skälsjön wind farm completed
BayWa r.e. to provide asset management services for Greencoat UK Wind’s wind portfolio
MPYR Solar Europe completes Northwold PV project
Hydrogen Microgrids Make Sun and Wind Storable
RWE and Meta sign long-term power purchase agreement in Texas
Octopus Energy unlocks French green power
Vianode launches first recycled graphite product
Breakthrough for low-cost solar hydrogen production
Actis closes US$600 million MTerra Solar investment
PV thin films benefit from machine-learning
Alight secures €46 million to finance solar park
DNV launches H2MET joint industry project
Eku Energy Awarded Long-Duration Storage Long-Term Energy Service Agreement
Sonnedix acquires two renewable energy projects in Portugal
Endua demonstrates viable hydrogen for clean energy projects
Integrated Trinasolar solution powers 22MW Valcasado solar facility in Huelva, Spain
IG Renewables celebrates first planning success of 3GW pipeline
Perovskite PVs: thermal stress is the key to stability
Next gen solar cells can be totally recyclable
BYD Secures 12.5GWh Grid-Scale Battery Projects
Global underwater hub establishes taskforce to tackle subsea cable reliability and performance
Modern hydrogen and mesa solutions partner
PNE AG Sells Swedish Renewable Energy Companies to Aneo
NTR Secures €109 Million Renewable Energy Financing with Nord/LB and AIB
Victory Hill Global Energises Two New Solar DG Assets in Brazil
Salamander project successfully concludes data monitoring at floating offshore wind site
UK Achieves Cleanest Electricity Generation in 2024: Carbon Brief Analysis
ENERTRAG to Erect 26 New Wind Turbines Across Germany
×
Search the news archive

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

You may choose to subscribe to the Smart Energy Management Magazine, the Smart Energy Management 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: