Bart Roose
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Optimized Graphene-Oxide-Based Interconnecting Layer in All-Perovskite Tandem Solar Cells Open
All-perovskite tandem solar cells represent a significant advancement in next-generation photovoltaics toward higher power conversion efficiencies than single junction cells. A critical component of a monolithic tandem solar cell is the in…
View article: Incorporating thermal co-evaporation in current-matched all-perovskite triple-junction solar cells
Incorporating thermal co-evaporation in current-matched all-perovskite triple-junction solar cells Open
Thermal co-evaporation of halide perovskites is a solution-free, conformal, scalable, and controllable deposition technique with great potential for commercial applications, particularly in multi-junction solar cells.
View article: Roadmap on established and emerging photovoltaics for sustainable energy conversion
Roadmap on established and emerging photovoltaics for sustainable energy conversion Open
Photovoltaics (PVs) are a critical technology for curbing growing levels of anthropogenic greenhouse gas emissions, and meeting increases in future demand for low-carbon electricity. In order to fulfill ambitions for net-zero carbon dioxid…
View article: Strain Heterogeneity and Extended Defects in Halide Perovskite Devices
Strain Heterogeneity and Extended Defects in Halide Perovskite Devices Open
Strain is an important property in halide perovskite semiconductors used for optoelectronic applications because of its ability to influence device efficiency and stability. However, descriptions of strain in these materials are generally …
Multimodal operando microscopy reveals that interfacial chemistry and nanoscale performance disorder dictate perovskite solar cell stability Open
Next-generation low-cost semiconductors such as halide perovskites exhibit optoelectronic properties dominated by nanoscale variations in their structure, composition and photophysics. While microscopy provides a proxy for ultimate device …
View article: Electrochemical Impedance Spectroscopy of All-Perovskite Tandem Solar Cells
Electrochemical Impedance Spectroscopy of All-Perovskite Tandem Solar Cells Open
This work explores electrochemical impedance spectroscopy to study recombination and ionic processes in all-perovskite tandem solar cells. We exploit selective excitation of each sub-cell to enhance or suppress the impedance signal from ea…
View article: Integration of Metal Meshes as Transparent Conducting Electrodes into Perovskite Solar Cells
Integration of Metal Meshes as Transparent Conducting Electrodes into Perovskite Solar Cells Open
As the demand for photovoltaic technologies continues to grow, the quest for efficient and sustainable transparent conducting electrodes (TCEs) rapidly rises. Traditional solutions, such as indium tin oxide (ITO), face challenges related t…
View article: Substitution of lead with tin suppresses ionic transport in halide perovskite optoelectronics
Substitution of lead with tin suppresses ionic transport in halide perovskite optoelectronics Open
Mobile ions cause deterioration in both device performance and stability of lead halide perovskite devices. This study provides direct evidence for substantial suppression of ionic migration effects in tin-containing perovskite composition…
View article: Roadmap on Photovoltaic Absorber Materials for Sustainable Energy Conversion
Roadmap on Photovoltaic Absorber Materials for Sustainable Energy Conversion Open
Photovoltaics (PVs) are a critical technology for curbing growing levels of anthropogenic greenhouse gas emissions, and meeting increases in future demand for low-carbon electricity. In order to fulfil ambitions for net-zero carbon dioxide…
View article: Tailoring Interlayer Charge Transfer Dynamics in 2D Perovskites with Electroactive Spacer Molecules
Tailoring Interlayer Charge Transfer Dynamics in 2D Perovskites with Electroactive Spacer Molecules Open
The family of hybrid organic-inorganic lead-halide perovskites are the subject of intense interest for optoelectronic applications, from light-emitting diodes to photovoltaics to X-ray detectors. Due to the inert nature of most organic mol…
View article: Tailoring Interlayer Charge Transfer Dynamics in 2D Perovskites with Electroactive Spacer Molecules
Tailoring Interlayer Charge Transfer Dynamics in 2D Perovskites with Electroactive Spacer Molecules Open
The family of hybrid organic-inorganic lead-halide perovskites are the subject of intense interest for optoelectronic applications, from light-emitting diodes to photovoltaics to X-ray detectors. Due to the inert nature of most organic mol…
Vacuum-Deposited Wide-Bandgap Perovskite for All-Perovskite Tandem Solar Cells Open
All-perovskite tandem solar cells beckon as lower cost alternatives to conventional single junction cells. Solution-processing has enabled rapid optimization of perovskite solar technologies, but new deposition routes will enable modularit…
View article: Substitution of Lead with Tin Suppresses Ionic Transport in Halide Perovskite Optoelectronics
Substitution of Lead with Tin Suppresses Ionic Transport in Halide Perovskite Optoelectronics Open
Despite the rapid rise in the performance of a variety of perovskite optoelectronic devices with vertical charge transport, the effects of ion migration remain a common and longstanding Achilles heel limiting the long-term operational stab…
Incorporation of carbon nanotubes in hole transport materials for perovskite solar cells Open
Many loss processes in perovskite solar cells (PSCs) take place at interfaces. One effective mitigation strategy is introducing carbon derivatives at the interface of the charge transport layers with the halide perovskite absorber and/or w…
Identification and Mitigation of Transient Phenomena That Complicate the Characterization of Halide Perovskite Photodetectors Open
Halide perovskites have shown promise to advance the field of light detection in next generation photodetectors, offering performance and functionality beyond what is currently possible with traditional inorganic semiconductors. Despite a …
Periodic module rejuvenation provides early market entry for circular all-perovskite tandem photovoltaic technologies Open
This work unveils periodic module rejuvenation as a new strategy to bring online the next-generation of perovskite tandem photovoltaic technologies earlier using experimental investigation and life cycle assessment modeling as an integrate…
Tunable Multiband Halide Perovskite Tandem Photodetectors with Switchable Response Open
Photodetectors with multiple spectral response bands have shown promise to improve imaging and communications through the switchable detection of different photon energies. However, demonstrations to date have been limited to only two band…
Perovskite Solar Cells Open
Solar energy is set to play a big role in future energy generation and achieving climate change goals [...]
Efficient all-perovskite tandem solar cells by dual-interface optimisation of vacuum-deposited wide-bandgap perovskite Open
Tandem perovskite solar cells beckon as lower cost alternatives to conventional single junction solar cells, with all-perovskite tandem photovoltaic architectures showing power conversion efficiencies up to 26.4%. Solution-processing appro…
Local Symmetry Breaking Drives Picosecond Spin Domain Formation in Polycrystalline Semiconducting Films Open
Photoinduced spin-charge interconversion in semiconductors with spin-orbit coupling could provide a route to optically addressable spintronics without the use of external magnetic fields. A central question is whether the resulting spin-as…
Charge Transport in Mixed Metal Halide Perovskite Semiconductors Open
Investigation of the inherent field-driven charge transport behaviour of 3D lead halide perovskites has largely remained a challenging task, owing primarily to undesirable ionic migration effects near room temperature. In addition, the pre…
Local manufacturing of perovskite solar cells, a game-changer for low- and lower-middle income countries? Open
Local manufacturing of perovskite solar cells is feasible in many low- and lower-middle income countries and would boost the economy by providing jobs, adding value to local resources and providing a reliable clean energy source.
Optoelectronic Properties of Low‐Bandgap Halide Perovskites for Solar Cell Applications Open
Riding on the coat tails of rapid developments in single‐junction halide perovskite solar cells, all‐perovskite multijunction solar cells have recently garnered significant attention, with the highest power‐conversion efficiency already re…