Research News: Upscaling of Perovskite Solar Cells, EUPVSEC and Latest Papers
Get ready for a content-packed September. First, don't miss our latest episode of Fluxim’s Science Shorts where we dissect the complexities of Advanced Upscaling in Organic and perovskite Solar Cells. We have crafted this video as a comprehensive guide to simulation, covering everything from monolithic module design to the impact of Transparent Conductive Oxide (TCO) sheet resistance on Fill Factor (FF). Watch it here.
Mark your calendars for the EUPVSEC in Lisbon, Portugal where Fluxim´s Dr. Urs Aeberhard will be presenting our work with three talks. While you are there come and see us at our booth D8. Read on to see what research tools we will be bringing with us. Find out more about EUPVSEC
And we're not stopping there. Check out our most recent blog post that focuses on Ensuring Precise Measurements for LEDs and PVs that share a common electrode. Learn more here
Last but certainly not least, our customers continue to publish cutting-edge research, check out the latest papers, and see how they have been using our research tools.
Are you grappling with the complexities of upscaling Perovskite Solar Cells? Our latest Fluxim’s Science Shorts video is designed just for you, clarifying how to tackle these challenges through our simulation software Laoss.
👇 What You Will Learn:
The foundational understanding of monolithic module design for solar cells.
Insights into how electrical resistance can impact the overall efficiency of your solar cells.
The pivotal role that interconnection gaps play in solar cell construction.
Expert guidelines on employing Laoss software for performance optimization.
The critical influence of Transparent Conductive Oxide (TCO) sheet resistance on Fill Factor (FF).
👇 Let us know in the comments section at the bottom if you have other methods to achieve high performance in large-area photovoltaic devices!
EUPVSEC- 40th Anniversary
Are you going to this year's EU PVSEC?
Don't miss the chance to connect with Fluxim! Our team will not only be presenting insightful talks but also showcasing our state-of-the-art simulation software and measurement tools at Booth D8.
Dr. Urs Aeberhard will be busy giving three talks sharing insights on a range of topics:
18.09.23 Role of Contacts in the Operation of Valley-Photovoltaics Devices
19.09.23 Analysis of Local Variations in Transient Electroluminescence Images of Perovskite Solar Cells
20.09.23 Simulation-Based Loss Analysis & Optimization of All-Perovskite Tandem Solar Cells & Modules
Mark these talks in your EUPVSEC Calendar.
See Our Tools in Action:
RSVP now for a live demonstration at Booth D8.
Why should you visit us at Booth D8? Dr. Daniele Braga will be demonstrating our advanced simulation software Setfos and Laoss, as well as our latest measurement solutions Litos Lite and Paios. This is a golden opportunity to get hands-on and discuss how Fluxim's tools can significantly elevate your research and development efforts. So come by and let’s discuss how we can boost your PV or LED.
Fix a Date. If you want to be certain of getting time with us please fill in the form below and arrange a meeting with us at Booth D8.
RESEARCH BLOG
Measurement Accuracy of LEDs and PVs with a Common Electrode
This comprehensive white paper is a must-read for researchers delving into the complexities of LEDs and photovoltaic devices. We meticulously examine how a common electrode influences your device's measurement accuracy, affecting key metrics like maximum-power-point (MPP) and open-circuit voltage (Voc).
Armed with simulations and real measurements, the blog explains the role of electric resistance and offers actionable insights for overcoming these challenges. By the end, you will possess an enhanced understanding of how to optimize your measurement setup, ensuring that your work stands up to rigorous scrutiny.
New Research Publications
Solvent and A‑Site Cation Control Preferred Crystallographic Orientation in Bromine-Based Perovskite Thin Films
J. Hidalgo, Y. An, D. Yehorova, et al.
Chemistry of Materials 35, 4181, (2023)
DOI: 10.1021/acs.chemmater.3c00075
This Research from Georgia Tech, under Prof. Juan-Pablo Correa-Baena, investigates the factors that determine crystallographic orientation in lead bromide perovskites. The researchers show that the solvent and organic A-site cation play a critical role in the preferred orientation of the thin films. Dimethylsulfoxide (DMSO), influences the early stages of crystallization and induces preferred orientation by preventing colloidal particle interactions. Additionally, the choice of A-site cation, such as methylammonium or formamidinium, affects the degree of preferred orientation. Overall, this study highlights the importance of solvent and A-site cation in determining crystallographic orientation and its impact on the electronic and ionic properties of solar cells.
How Litos Lite & Paios were used
LITOS LITE was used to measure the current density-voltage (J-V) characteristics of the solar cells. The J-V curves were obtained by scanning voltage in the range from 1.4 to -0.5 V with a scan speed of 50 mV·s-1 first in reverse and then in forward scan directions.
PAIOS was used to perform Impedance Spectroscopy (IS) on complete solar cells at room temperature under one sun illumination and in ambient air. The measurements were performed at five different offset voltages spaced from 0 V to the open circuit.
High-efficiency thermally activated delayed fluorescence materials via a shamrock-shaped design strategy to enable OLEDs with external quantum efficiency over 38%
Li, G., Pu, J., Yang, Z., Deng, et al.
Aggregate e382, 1, (2023)
https://doi.org/10.1002/agt2.382
This study proposes a design strategy for constructing highly efficient organic light-emitting diodes (OLEDs) using thermally activated delayed fluorescence (TADF) emitters with high horizontal dipole ratios. The researchers designed two TADF emitters, BO-3DMAC and BO-3DPAC, using a shamrock-shaped structure. These emitters have high horizontal dipole ratios of 84-93% in both neat and doped films, and they showed excellent external quantum efficiencies (EQEs) of up to 38.7% with sky-blue emission. The researchers also demonstrated that the shamrock-shaped design resulted in aggregation-induced emission (AIE) and low-efficiency roll-off. The emitters had low singlet-triplet energy splitting (ΔEst) and achieved high PLQYs. The results highlight the potential of the shamrock-shaped design to construct TADF emitters with a high horizontal dipole ratio and pave the way for the development of high-performance OLEDs.
How Setfos was used
Setfos was used to simulate the light out-coupling efficiency of the LEDs. The refractive indexes of the materials were obtained from the Setfos database
Perovskite Solar Cells Consisting of PTAA Modified with Monomolecular Layer and Application to All-Perovskite Tandem Solar Cells with Efficiency over 25%
Bi, H., Fujiwara, Y., Kapil, G., et al.
Adv. Funct. Mater. 33, 2300089, (2023)
https://doi.org/10.1002/adfm.202300089
This research discusses the enhancement of perovskite solar cells (PSCs) by modifying the hole transport layer (HTL) with a monomolecular layer (MNL). They found that the modification of the surface of PTAA (poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]) with an MNL improved the PSC efficiency by enhancing the quality of the perovskite film. The treatment reduces stress and strains and decreases charge recombination sites. The length of the alkyl group in the MNL also influenced the efficiency of the PTAA. Solar cells fabricated with this functionalized PTAA/MNL achieved a power conversion efficiency of 16.57% in wide bandgap lead PSCs. Furthermore, the PTAA/monomolecular substrate enabled tandem all-perovskite solar cells with over 25% efficiency.
Paios was used to carry out Electrochemical impedance spectroscopy (EIS), Transient photovoltaic voltage (TPV), and Transient photovoltaic current (TPC).