203 citations · 208 across the 5 of their papers we have counts for
4 papers · 1 filter
Highly Efficient Carrier Multiplication in van der Waals layered Materials
Ji-Hee Kim, Matthew R. Bergren, Jin Cheol Park +8
Carrier multiplication (CM), a photo-physical process to generate multiple electron-hole pairs by exploiting excess energy of free carriers, is explored for efficient photovoltaic…
Ultrafast zero balance of the oscillator-strength sum rule in graphene
Jaeseok Kim, Seong Chu Lim, Seung Jin Chae +5
Oscillator-strength sum rule in light-induced transitions is one general form of quantum-mechanical identities. Although this sum rule is well established in equilibrium photo-phys…
Ultrafast spin-resolved spectroscopy reveals dominant exciton dynamics in conducting polymer polyaniline
Soonyoung Cha, Yoochan Hong, Jaemoon Yang +7
The conducting polymer polyaniline (PANI) has a wide range of optoelectronic applications due to its unique electronic and optical characteristics. Although extensive works have be…
Exciton dynamics in atomically thin MoS2: inter-excitonic interaction and broadening kinetics
Sangwan Sim, Jusang Park, Jeong-Gyu Song +4
We report ultrafast pump-probe spectroscopy examining exciton dynamics in atomically thin MoS2. Spectrally- and temporally-resolved measurements are performed to investigate the in…