Petra J. Cameron
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View article: Genipin-Crosslinked Gelatin Hydrogel for the Detection and Treatment of Active Metalloprotease Releasing Pseudomonas aeruginosa.
Genipin-Crosslinked Gelatin Hydrogel for the Detection and Treatment of Active Metalloprotease Releasing Pseudomonas aeruginosa. Open
We report a genipin-crosslinked gelatin hydrogel for the detection of the pathogenic strains of Pseudomonas aeruginosa releasing active metalloproteases. Enzymatic degradation of the blue gel gives a clear visual signal that indicates the …
View article: Predicting Long-Term Stability from Short-Term Measurement: Insights from Modeling Degradation in Perovskite Solar Cells during Voltage Scans and Impedance Spectroscopy
Predicting Long-Term Stability from Short-Term Measurement: Insights from Modeling Degradation in Perovskite Solar Cells during Voltage Scans and Impedance Spectroscopy Open
A drift-diffusion model is used to investigate the effect of device degradation on current-voltage and impedance measurements of perovskite solar cells (PSCs). Modifications are made to the open-source drift-diffusion software IonMonger to…
View article: Transparent, Sprayable Plastic Films for Luminescent Down‐Shifted‐Assisted Plant Growth
Transparent, Sprayable Plastic Films for Luminescent Down‐Shifted‐Assisted Plant Growth Open
The world's steadily growing population and global heating due to climate change are a threat to food security. To meet this challenge, novel technologies are needed to increase crop production in a sustainable way. In this work, the use o…
View article: Understanding the Full Zoo of Perovskite Solar Cell Impedance Spectra with the Standard Drift‐Diffusion Model
Understanding the Full Zoo of Perovskite Solar Cell Impedance Spectra with the Standard Drift‐Diffusion Model Open
The impedance spectra of perovskite solar cells frequently exhibit multiple features that are typically modelled by complex equivalent circuits. This approach can lead to the inclusion of circuit elements without a sensible physical interp…
View article: Understanding the full zoo of perovskite solar cell impedance spectra with the standard drift-diffusion model
Understanding the full zoo of perovskite solar cell impedance spectra with the standard drift-diffusion model Open
The impedance spectra of perovskite solar cells frequently exhibit multiple features which are typically modelled by complex equivalent circuits. This approach can lead to the inclusion of circuit elements without a sensible physical inter…
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: 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: Ionic Accumulation as a Diagnostic Tool in Perovskite Solar Cells: Characterizing Band Alignment with Rapid Voltage Pulses
Ionic Accumulation as a Diagnostic Tool in Perovskite Solar Cells: Characterizing Band Alignment with Rapid Voltage Pulses Open
Despite record‐breaking devices, interfaces in perovskite solar cells are still poorly understood, inhibiting further progress. Their mixed ionic‐electronic nature results in compositional variations at the interfaces, depending on the his…
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…
View article: Inverted hysteresis as a diagnostic tool for perovskite solar cells: Insights from the drift-diffusion model
Inverted hysteresis as a diagnostic tool for perovskite solar cells: Insights from the drift-diffusion model Open
Despite current–voltage hysteresis in perovskite solar cells (PSCs) having been the subject of significant research over the past decade, inverted hysteresis (IH), although frequently observed, is still not properly understood. Several mec…
View article: Inverted Hysteresis in n–i–p and p–i–n Perovskite Solar Cells
Inverted Hysteresis in n–i–p and p–i–n Perovskite Solar Cells Open
A combination of experimental studies and drift‐diffusion modeling has been used to investigate the appearance of inverted hysteresis, where the area under the J–V curve for the reverse scan is lower than in the forward scan, in perovskite…
View article: The effect of multiple ion substitutions on halide ion migration in perovskite solar cells
The effect of multiple ion substitutions on halide ion migration in perovskite solar cells Open
This work shows how substitutions to the perovskite lattice at multiple sites can affect iodide ion migration. The triple cation perovskite, Cs 0.05 (FA 0.83 MA 0.17 ) 0.95 Pb(I 0.83 Br 0.17 ) 3 , shows a higher barrier to iodide ion migra…
View article: Using design of experiment to obtain a systematic understanding of the effect of synthesis parameters on the properties of perovskite nanocrystals
Using design of experiment to obtain a systematic understanding of the effect of synthesis parameters on the properties of perovskite nanocrystals Open
Design of experiments was used to systematically investigate the synthesis of MAPbI3 nanoparticles in a flow reactor. By controlling the solvents and the ligands, we were able to tune the MAPbI3 photoluminescence peak between 614 and 737 n…
View article: Ceramic Soil Microbial Fuel Cells Sensors for Early Detection of Eutrophication
Ceramic Soil Microbial Fuel Cells Sensors for Early Detection of Eutrophication Open
The increasing use of fertilisers rises the risk of eutrophication, a sudden algal bloom that seriously damage ecosystems due to critical oxygen depletion. Continuous monitoring of oxygen in environmental waters could improve the detection…
View article: Dataset for "Partial Cation Substitution Reduces Iodide Ion Transport in Lead Iodide Perovskite Solar Cells"
Dataset for "Partial Cation Substitution Reduces Iodide Ion Transport in Lead Iodide Perovskite Solar Cells" Open
The dataset includes UV-Vis, XRD, impedance and JV data for inverted NiO perovskite solar cells where the MA+ cation has been partially substituted.
View article: Effect of Electrode Properties on the Performance of a Photosynthetic Microbial Fuel Cell for Atrazine Detection
Effect of Electrode Properties on the Performance of a Photosynthetic Microbial Fuel Cell for Atrazine Detection Open
The growing use of herbicides in agriculture poses increasing concerns on the pollution of water systems worldwide. To be able to assess the presence of these compounds in waters and limit their impact on human health and ecosystems, the d…
View article: Perovskite‐Based Optoelectronic Biointerfaces for Non‐Bias‐Assisted Photostimulation of Cells
Perovskite‐Based Optoelectronic Biointerfaces for Non‐Bias‐Assisted Photostimulation of Cells Open
Organohalide perovskites have attracted significant attention for efficient solar energy harvesting. They boost the photoelectrical conversion efficiency of the solution‐processable solar cells because of having a nearly 100% internal quan…
View article: A photosynthetic toxicity biosensor for water
A photosynthetic toxicity biosensor for water Open
Effective detection of contaminants in water is the basis of safe water provision to communities. Traditional analytical methods are, however, expensive, time-consuming and cannot be easily adapted to emerging pollutants (i.e. herbicides, …
View article: Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells
Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells Open
Perovskite solar cells containing a mixture of A-site cations show increased activation energies for iodide diffusion.
View article: Influence of bromide content on iodide migration in inverted MAPb(I<sub>1−x</sub>Br<sub>x</sub>)<sub>3</sub>perovskite solar cells
Influence of bromide content on iodide migration in inverted MAPb(I<sub>1−x</sub>Br<sub>x</sub>)<sub>3</sub>perovskite solar cells Open
Impedance spectroscopy shows the bromide concentration required to supress the low frequency response from mobile ions.
View article: Azulenes with aryl substituents bearing pentafluorosulfanyl groups: synthesis, spectroscopic and halochromic properties
Azulenes with aryl substituents bearing pentafluorosulfanyl groups: synthesis, spectroscopic and halochromic properties Open
Azulenes with SF5-containing substituents gave significantly different spectroscopic responses to protonation depending on the regioisomer in question.
View article: Dataset for ''Screen printed carbon CsPbBr3 perovskite solar cells with high open-circuit photovoltage''
Dataset for ''Screen printed carbon CsPbBr3 perovskite solar cells with high open-circuit photovoltage'' Open
All the data collected and presented in the publication ''Screen printed carbon CsPbBr3 perovskite solar cells with high open-circuit photovoltage'' have been grouped in this Dataset. Carbon based CsPbBr3 perovskite solar cells have been i…