Hot-electron transfer in quantum-dot heterojunction films

G Grimaldi, RW Crisp, S Ten Brinck, F Zapata… - Nature …, 2018 - nature.com
Thermalization losses limit the photon-to-power conversion of solar cells at the high-energy
side of the solar spectrum, as electrons quickly lose their energy relaxing to the band edge …

Observation of a phonon bottleneck in copper-doped colloidal quantum dots

L Wang, Z Chen, G Liang, Y Li, R Lai, T Ding… - Nature …, 2019 - nature.com
Hot electrons can dramatically improve the efficiency of solar cells and sensitize
energetically-demanding photochemical reactions. Efficient hot electron devices have been …

Two-photon photoemission study of competing auger and surface-mediated relaxation of hot electrons in CdSe quantum dot solids

P Sippel, W Albrecht, D Mitoraj, R Eichberger… - Nano …, 2013 - ACS Publications
Solids composed of colloidal quantum dots hold promise for third generation highly efficient
thin-film photovoltaic cells. The presence of well-separated conduction electron states opens …

Efficient hot electron transfer in quantum dot-sensitized mesoporous oxides at room temperature

HI Wang, I Infante, S Brinck, E Cánovas, M Bonn - Nano Letters, 2018 - ACS Publications
Hot carrier cooling processes represent one of the major efficiency losses in solar energy
conversion. Losses associated with cooling can in principle be circumvented if hot carrier …

Lead telluride quantum dot solar cells displaying external quantum efficiencies exceeding 120%

ML Böhm, TC Jellicoe, M Tabachnyk, NJLK Davis… - Nano …, 2015 - ACS Publications
Multiple exciton generation (MEG) in semiconducting quantum dots is a process that
produces multiple charge-carrier pairs from a single excitation. MEG is a possible route to …

Electrochemical control over photoinduced electron transfer and trapping in CdSe-CdTe quantum-dot solids

SC Boehme, TA Walvis, I Infante, FC Grozema… - ACS …, 2014 - ACS Publications
Understanding and controlling charge transfer between different kinds of colloidal quantum
dots (QDs) is important for devices such as light-emitting diodes and solar cells and for …

Effective harvesting, detection, and conversion of IR radiation due to quantum dots with built-in charge

K Sablon, A Sergeev, N Vagidov, A Antipov… - Nanoscale research …, 2011 - Springer
We analyze the effect of doping on photoelectron kinetics in quantum dot [QD] structures and
find two strong effects of the built-in-dot charge. First, the built-in-dot charge enhances the …

Bulk transport and interfacial transfer dynamics of photogenerated carriers in CdSe quantum dot solid electrodes

Y Yang, Z Liu, T Lian - Nano letters, 2013 - ACS Publications
Practical solar-to-fuel conversion applications of quantum-confined semiconductor crystals
require their integration into electrodes. We show that photogenerated electrons in quantum …

Auger-assisted electron transfer from photoexcited semiconductor quantum dots

H Zhu, Y Yang, K Hyeon-Deuk, M Califano, N Song… - Nano …, 2014 - ACS Publications
Although quantum confined nanomaterials, such as quantum dots (QDs) have emerged as a
new class of light harvesting and charge separation materials for solar energy conversion …

Enhanced hot-carrier cooling and ultrafast spectral diffusion in strongly coupled PbSe quantum-dot solids

Y Gao, E Talgorn, M Aerts, MT Trinh, JM Schins… - Nano …, 2011 - ACS Publications
PbSe quantum-dot solids are of great interest for low cost and efficient photodetectors and
solar cells. We have prepared PbSe quantum-dot solids with high charge carrier mobilities …