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Solid-state solar modules based on mesoscopic organometal halide perovskite: a route towards the up-scaling process
F Matteocci1, S Razza, F Di Giacomo
1C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome "Tor Vergata", via del Politecnico 1, Rome, 00133, Italy. aldo.dicarlo@uniroma2.it.
Physical Chemistry Chemical Physics : PCCP
|January 24, 2014
Summary
This study presents novel organometal halide perovskite modules for solar energy. Spiro-OMeTAD demonstrated superior long-term stability compared to poly(3-hexylthiophene) under continuous light stress.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Organometal halide perovskites are emerging materials for solar cell applications.
- Developing stable and scalable perovskite solar modules is crucial for commercialization.
Purpose of the Study:
- To fabricate and characterize solid-state perovskite solar modules using different hole transport materials.
- To evaluate the device performance and long-term stability of up-scaled perovskite modules.
Main Methods:
- Fabrication of solid-state perovskite modules (CH3NH3PbI3-xClx) using Spiro-OMeTAD and poly(3-hexylthiophene) as hole transport layers.
- Device up-scaling with integrated series-interconnections for large-area cells.
- Performance testing under AM1.5G, 1 Sun illumination and long-term stability assessment in air.
Main Results:
- Achieved a maximum conversion efficiency of 5.1% for perovskite modules with both hole transport materials.
- Poly(3-hexylthiophene)-based modules showed an 80% efficiency drop after 170 hours.
- Spiro-OMeTAD-based modules maintained over 60% of their initial efficiency after 335 hours, indicating promising stability.
Conclusions:
- Organometal halide perovskite modules can be fabricated with scalable methods.
- Spiro-OMeTAD is a more stable hole transport material for perovskite solar modules under operational stress compared to poly(3-hexylthiophene).
- Further research into material optimization is needed for enhanced perovskite solar module longevity.
