Direct measurement of hole transport dynamics in DNA

Nature ◽  
2000 ◽  
Vol 406 (6791) ◽  
pp. 51-53 ◽  
Author(s):  
Frederick D. Lewis ◽  
Xiaoyang Liu ◽  
Jianqin Liu ◽  
Scott E. Miller ◽  
Ryan T. Hayes ◽  
...  
Keyword(s):  
Direct Measurement ◽  
Hole Transport ◽  
Transport Dynamics

scholarly journals Real-Time Electron and Hole Transport Dynamics in Halide Perovskite Nanowires

Nano Letters ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 8701-8707
Author(s):  
Lisa Janker ◽  
Yu Tong ◽  
Lakshminarayana Polavarapu ◽  
Jochen Feldmann ◽  
Alexander S. Urban ◽  
...  
Keyword(s):  
Real Time ◽  
Hole Transport ◽  
Transport Dynamics ◽  
Halide Perovskite

Dynamics of Wide Bandwidth Semiconductor Lasers

1997 ◽  
Vol 08 (03) ◽  
pp. 377-416 ◽  
Author(s):  
Daniel Tauber ◽  
John E. Bowers
Keyword(s):  
Active Region ◽  
Semiconductor Lasers ◽  
High Speed ◽  
Dynamic Performance ◽  
Signal Propagation ◽  
Hole Transport ◽  
Transport Dynamics ◽  
Very High Frequencies ◽  
Device Operation ◽  
Made In

In this paper we summarize the most important recent advances and results in high speed diode lasers. These advances have primarily come about as a result of physical understanding of the properties that affect the dynamic performance of these lasers. A great deal of progress has been made in understanding the active region properties of such devices, including the electron and hole transport dynamics as well as the effect of active region doping and strain. At the very high frequencies characteristic of the highest speed lasers reported to date the microwave signal propagation becomes an important issue that can limit the laser bandwidth. The distribution of signals along the laser length due to these effects are discussed, analyzed, and measured, and conclusions about bandwidth and device operation are drawn from the analysis. All of these different issues are summarized in this paper from both a theoretical and experimental perspective. The laser structures that address and overcome the problems caused by such factors are presented along with the best results obtained to date.

Efficient inverted planar perovskite solar cells based on inorganic hole-transport layers from nickel-containing organic sol

2019 ◽  
Vol 12 (01) ◽  
pp. 1850088 ◽  
Author(s):  
Weina Zhang ◽  
Jie Tang ◽  
Jihuai Wu ◽  
Zhang Lan
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Simple Solution ◽  
Hole Transport Layer ◽  
Solution Processed ◽  
Transport Dynamics ◽  
Nio Nanocrystals

Due to the rough surface of fluorine-doped tin oxide (FTO) conductive glasses, it is challenging to fabricate fully covered ultra-thin hole-transport layer (HTL) with thickness under 100[Formula: see text]nm by a simple solution-processed method. Yet, the quality of HTLs play a key role in determining photovoltaic performance of the inverted planar perovskite solar cells (PSCs) owing to their important functions for effectively extracting holes, blocking electrons, suppressing dark reaction, and so on. Here, we report a facile nickel-containing organic sol (Ni–Sol) route to fabricate fully covered 46[Formula: see text]nm thick NiO HTLs for efficient inverted planar PSCs. Comparing with the pre-synthesized NiO nanocrystals solution, the Ni–Sol is easier to spread around the rough outline of FTO to achieve higher surface coverage. Through optimizing the concentration of nickel-containing organic sol, the champion performance of the inverted planar PSCs can be achieved because of the high transparency and good hole-transport dynamics of the optimized NiO film. This work demonstrates the advanced Ni–Sol route for preparing efficient inverted planar PSCs by the simple solution-processed method.

Theoretical Characterization of the Structural and Hole Transport Dynamics in Liquid-Crystalline Phthalocyanine Stacks

2009 ◽  
Vol 113 (43) ◽  
pp. 14102-14111 ◽  
Author(s):  
Y. Olivier ◽  
L. Muccioli ◽  
V. Lemaur ◽  
Y. H. Geerts ◽  
C. Zannoni ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Hole Transport ◽  
Transport Dynamics ◽  
Theoretical Characterization

scholarly journals Influence of Environmentally Affected Hole-Transport Layers on Spatial Homogeneity and Charge-Transport Dynamics of Organic Solar Cells

2018 ◽  
Vol 10 (12) ◽  
pp. 10102-10114 ◽  
Author(s):  
Huei-Ting Chien ◽  
Florian Pilat ◽  
Thomas Griesser ◽  
Harald Fitzek ◽  
Peter Poelt ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Organic Solar Cells ◽  
Hole Transport ◽  
Spatial Homogeneity ◽  
Transport Dynamics ◽  
Hole Transport Layers

Direct Measurement of the Listening of Hearing-Impaired Children

1970 ◽  
Vol 13 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Mary Mira
Keyword(s):  
Direct Measurement ◽  
Continuous Measurement ◽  
Hearing Impaired ◽  
Reinforcement System ◽  
School Aged Children ◽  
Conjugate Reinforcement ◽  
Impaired Children ◽  
Hearing Impaired Children

Listening, a significant dimension of the behavior of hearing-impaired children, may be measured directly by recording childrens' responses to obtain audio narrations programmed via a conjugate reinforcement system. Twelve hearing-impaired, school-aged children responded in varying ways to the opportunity to listen. Direct and continuous measurement of listening has relevance for evaluation of remediation methods and for discovery of variables potentially related to listening.

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