607 citations · 613 across the 8 of their papers we have counts for
8 papers
Optically Excited Two-Band Amplified Spontaneous Emission from a High-Current-Density Quantum-Dot LED
Namyoung Ahn, Young-Shin Park, Clément Livache +2
Laser diodes based on solution-processable materials could benefit numerous technologies including integrated electronics and photonics, telecommunication, and medical diagnostics.…
Imaging real-time amorphization of hybrid perovskite solar cells under electrical biasing
Min-cheol Kim, Namyoung Ahn, Diyi Cheng +11
Perovskite solar cells have drawn much attention in recent years, owing to its world-record setting photovoltaic performances. Despite its promising use in tandem applications and…
Impermeable Inorganic Walls Sandwiching Photoactive Layer toward Inverted Perovskite Solar and Indoor-Photovoltaic Devices
Jie Xu, Jun Xi, Hua Dong +11
Interfaces between the perovskite active layer and the charge-transport layers (CTLs) play a critical role in both efficiency and stability of halide-perovskite photovoltaics. One…
Pulsatile therapy for perovskite solar cells
Kiwan Jeong, Junseop Byeon, Jihun Jang +2
The current utmost challenge for commercialization of perovskite solar cells is to ensure long-term operation stability. Here, we developed the pulsatile therapy which can prolong…
Charge transport layer dependent electronic band bending in perovskite solar cells and its correlation to device degradation
Junseop Byeon, Jutae Kim, Ji-Young Kim +4
Perovskite solar cells (PSCs) have shown remarkably improved power-conversion efficiency of around 25%. However, their working principle remains arguable and the stability issue ha…
Decrystallization of CH3NH3PbI3 perovskite crystals via polarity dependent localized charges
Min-cheol Kim, Namyoung Ahn, Eunhak Lim +6
Despite soaring performance of organic-inorganic hybrid perovskite materials in recent years, the mechanism of their decomposition at actual operation condition has been elusive. H…
Atomistic mechanism for trapped-charge driven degradation of perovskite solar cells
Kwisung Kwak, Eunhak Lim, Namyoung Ahn +4
It is unmistakably paradoxical that the weakest point of the photoactive organic-inorganic hybrid perovskite is its instability against light. Why and how perovskites break down un…
Trapped charge driven degradation of perovskite solar cells
Namyoung Ahn, Kwisung Kwak, Min Seok Jang +6
Perovskite solar cells have shown fast deterioration during actual operation even with encapsulation, but its mechanism has been elusive. We found the fundamental mechanism for irr…