Hannah Contreras

Out now @ACS_AMI - we can’t neglect the buried ITO/PA interface! 1️⃣ITO etching, 2️⃣dip coating, and 3️⃣using dual PAs (but only one PACz) minimize nonrad recomb centers and maximize PA coverage and perovskite solar cell PCE. Thanks to all collaborators! doi.org/10.1021/acsami…

Out now in @ACS_AMI, @_hcon’s work links PA “SAM” deposition method to layer coverage and device performance using: 1. ITO etching 2. Dip coating 3. Secondary diphosphonic acid molecule (after first PACz) Also found Pb adsorption varies w PA treatment! doi.org/10.1021/acsami…

Excited to share our work on understanding diamines' surface reaction mechanism to optimize Si–perovskite tandems! Huge thanks to @SnaithGroup for hosting me & @_hcon, and to all the incredible collaborators @joelalexsmith @CUBoulderCHEM @BaenaLab et al.➡️ pubs.acs.org/doi/10.1021/ac…

Congrats to @margheritaddei,@SnaithGroup,@CUBoulderCHEM and all co-authors on this collaborative effort! Diamines react at the surface with formamidinium, forming a new cyclic molecule that boost Si–perovskite tandem performance! 🧾pubs.acs.org/doi/10.1021/ac… @ACS_AMI

Had a great time last week at #S25MRS presenting, talking about perovskite degradation and scanning probe microscopy, and showing folks around UW! Now back to experiments!

Was a pleasure having @mvkovalenko as our @UW_CEI seminar speaker today. Thank you for a great talk detailing your extensive work innovating QD synthesis and design!

From perovskites to AFM to QDs to NPs, lots of group members giving talks @Materials_MRS Seattle on our home turf! Looking forward to lots of good science on display and thoughtful discussions this week! Stop by and say hi!

Curious about how the electric field changes in perovskite solar cells as they degrade? If you’re at @Materials_MRS next week, stop by and say hi at my talk on cross sectional PSC SKPM under reverse bias at 2:45PM Friday Room 430. Looking forward to some great science convos!

Applications are now open for the 2025-26 CEI Graduate Fellowship! 💜💛🐾 @UW PhD students conduct research on clean energy adoption and participate in professional development + K-12 engagement activities. RA salary + tuition provided for 1–3 quarters Sep 16, 2025–June 15, 2026.

Watch out world, I am officially a PhD candidate!! Grateful to all those who helped me get here 🤗

Gillian's @acsnano paper presents the use of 2PACz interface modifiers to significantly enhance the brightness of perov quantum dot LEDs. They show suppressed efficiency roll-off at high levels of current & brightness, outperforming traditional HTLs! pubs.acs.org/doi/10.1021/ac…

VERY COOL to listen to the 2024 @NobelPrize Chemistry laureate and @UW Prof. David Baker (@UWproteindesign) lecture yesterday on his work and what’s next. Any amazing overview of years of dedicated work. Very exciting for the field and the university!!

Excited to share @fyjiang526’s recent @NatureEnergyJnl paper on stabilizing perovskite solar cells under reverse bias! Thanks for collaborations from McGehee group, @SnaithGroup, @MPEMRice et al. nature.com/articles/s4156…

@miliba01 @gingerlabUW @UW @IEEEPVSC @SarahWi8 It was our pleasure to host you!

Fascinating lab tour @gingerlabUW @UW on how to convince #perovskites and beyond to reveal their secrets to advanced atomic force microscopy. Thanks @_hcon et al. for showing us around during the lunch break of @IEEEPVSC.

Proud to have been named a Best Poster Nominee for @IEEEPVSC Perovskite and Organic Materials and Solar Cells Area! Thank you to the judges and organizers. Lots of great conversations surrounding this project today, and I’m energized to get more results!

I am at IEEE PVSC 52! Say hi to me at the sessions or at my poster, “Cross Sectional Potential Profile Dependent on Device Architecture in Reverse Bias for Wide Bandgap Perovskite Solar Cells” on Wednesday 3:30-5!

I encourage anyone studying renewable energy at in the Pacific Northwest to apply for a scholarship next year. It's a great opportunity for support and to engage with the greater energy community! resf-pnw.org

It was an honor to be awarded the Maxine Holland Hines Scholarship from the Renewable Energy Scholarship Foundation. It was energizing to meet so many peers concerned with climate change & clean energy. Grateful to RESF for their support of renewable energy research & education!

Had a great time at #S24MRS! Enjoyed many interesting perovskite talks, catching up with old friends and making new connections! It was especially fun showing some of our collaborators @SnaithGroup around Seattle and UW! Time to get in the lab to prep for next year’s MRS Seattle!