Explore these overviews of our recent research projects.
2020 Research Highlights
The twin boundaries formation does not decrease the device efficiency but can make perovskite electronic devices more flexible.
May 5, 2020
2019 Research Highlights
Matching electron and hole current achieves record external quantum efficiency of 11% and brightness of 9040 cd/m2 in the YCl3 incorporated blue perovskite light-emitting diodes.
Dec. 10, 2019
Enhancing Electron Diffusion Length in Narrow Bandgap Perovskites for Efficient All-Perovskite Tandem Solar Cells »
This work provides a promising method to enhance the optoelectronic properties of narrow-bandgap perovskites, which unlock the potential of high-efficiency, low-cost, and solution-processable perovskite-perovskite tandem solar cells.
Oct. 3, 2019
Metal halide perovskite semiconductors, with chemical composition ABX3, possess outstanding characteristics for optoelectronic applications, including but not limited to photovoltaics.
June 28, 2019
Films deposited by resonant-infrared matrix-assisted pulsed laser evaporation enable transient absorption spectroscopy measurements on oligothiophene-based lead halide perovskites, providing a critical window into excited state dynamics and validating hybrid density functional theory predictions of quantum well alignment between the various inorganic/organic moieties.
May 16, 2019
Conductivity Tuning via Doping with Electron Donating and Withdrawing Molecules in Perovskite CsPbl3 Nanocrystal Films »
Enhanced conductivity for p-type nanocrystal (NC) arrays enables significant improvements to field-effect transistors and phototransistors, which should, in turn, lead to performance improvements in light-detecting applications and solar cells.
May 10, 2019
Carrier Lifetimes of >1 ms in Sn-Pb Perovskites Enable Efficient All-Perovskite Tandem Solar Cells »
The addition of guanidinium thiocyanate results in marked improvements in the structural and optoelectronic properties of Sn-Pb mixed, low-band gap (~1.25- eV) perovskite films.
May 3, 2019
Through fluorine substitution on the para position in phenethylammonium (PEA) to form 4-fluorophenethylammonium (F-PEA), the average phenyl ring centroid−centroid distances in the organic layer become shorter with better aligned stacking of perovskite sheets.
March 18, 2019
2018 Research Highlights
Lattice distortion promotes a self-trapped exciton that emits broadband white light with a very high efficiency.
Nov. 7, 2018
In addition to larger structural distortion in 2D layered systems, there is a larger phonon coupling to carriers. These two effects can counterbalance each other to produce the longest live spin-coherence lifetime in a layered system where the layers contain 4 PbI62- octahedra.
Aug. 28, 2018