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Advanced filters: Author: Byeong Sub Kwak Clear advanced filters

Continuous-wave upconversion lasing with a sub-10 W cm⁻² threshold enabled by atomic disorder in the host matrix

Upconversion microlasers present a lot of advantages but also require high pumping powers. Here the authors present a high-performing microlaser based on anti-Stokes-shift in upconversion nanoparticles synthesized using a technique of liquid quenching.

Byeong-Seok Moon
Tae Kyung Lee
Dong-Hwan Kim
ResearchOpen Access21 Jul 2021
Nature Communications

Volume: 12, P: 1-9
Surface state-induced barrierless carrier injection in quantum dot electroluminescent devices

Hybrid quantum dot light-emitting diodes exhibit barrier-less carrier injection despite a seemingly unfavourable energy landscape. Here, Lee et al. unravel the origin of this barrier-less carrier injection, showing the critical role of surface states of quantum dots.

Hyeonjun Lee
Byeong Guk Jeong
Jaehoon Lim
ResearchOpen Access27 Sept 2021
Nature Communications

Volume: 12, P: 1-9
Surface modification of layered perovskite Sr₂TiO₄ for improved CO₂ photoreduction with H₂O to CH₄

Byeong Sub Kwak
Jeong Yeon Do
Misook Kang
ResearchOpen Access27 Nov 2017
Scientific Reports

Volume: 7, P: 1-15