Photoreduction of Hydrogen Cations on TiO2 and Its Impact on Surface Band Bending and the Charge Carrier Recombination Rate: A Photoluminescence Study under High Vacuum Conditions

2018 ◽  
Vol 122 (15) ◽  
pp. 8288-8294 ◽  
Author(s):  
Shiliang Ma ◽  
Zhen Zhang ◽  
Ian Harrison
Keyword(s):  
Charge Carrier ◽  
Recombination Rate ◽  
High Vacuum ◽  
Surface Band ◽  
Band Bending ◽  
Photoluminescence Study ◽  
Carrier Recombination ◽  
Charge Carrier Recombination

Few-Layered MoS2 Nanoparticles Loaded TiO2 Nanosheets with Exposed {001} Facets for Enhanced Photocatalytic Activity

NANO ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. 1850129 ◽  
Author(s):  
Chujun Chen ◽  
Xia Xin ◽  
Jinniu Zhang ◽  
Gang Li ◽  
Yafeng Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Carrier ◽  
Visible Light ◽  
Recombination Rate ◽  
Active Species ◽  
Molar Ratio ◽  
Carrier Recombination ◽  
Tio2 Nanosheets ◽  
Photocatalytic Activities ◽  
Charge Carrier Recombination

To improve the high charge carrier recombination rate and low visible light absorption of {001} facets exposed TiO2 [TiO2(001)] nanosheets, few-layered MoS2 nanoparticles were loaded on the surfaces of TiO2(001) nanosheets by a simple photodeposition method. The photocatalytic activities towards Rhodamine B (RhB) were investigated. The results showed that the MoS2–TiO2(001) nanocomposites exhibited much enhanced photocatalytic activities compared with the pure TiO2(001) nanosheets. At an optimal Mo/Ti molar ratio of 25%, the MoS2–TiO2(001) nanocomposites displayed the highest photocatalytic activity, which took only 30[Formula: see text]min to degrade 50[Formula: see text]mL of RhB (50[Formula: see text]mg/L). The active species in the degradation reaction were determined to be h[Formula: see text] and [Formula: see text]OH according to the free radical trapping experiments. The reduced charge carrier recombination rate, enhanced visible light utilization and increased surface areas contributed to the enhanced photocatalytic performances of the 25% MoS2–TiO2(001) nanocomposites.

Efficient Defect Passivation with Niacin for High-Performance and Stable Perovskite Solar Cells

2021 ◽  
Author(s):  
Jing Ren ◽  
Shurong Wang ◽  
Jianxing Xia ◽  
Chengbo Li ◽  
Lisha Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Trap States ◽  
Carrier Recombination ◽  
Defect Passivation ◽  
Recombination Centers ◽  
Charge Carrier Recombination ◽  
Halide Perovskite

Defects, inevitably produced in the solution-processed halide perovskite films, can act as charge carrier recombination centers to induce severe energy loss in perovskite solar cells (PSCs). Suppressing these trap states...

Time-dependent Langevin-type bimolecular charge carrier recombination in regiorandom poly(3-hexylthiophene)

2005 ◽  
Vol 155 (2) ◽  
pp. 242-245 ◽  
Author(s):  
A. Pivrikas ◽  
R. Österbacka ◽  
G. Juška ◽  
K. Arlauskas ◽  
H. Stubb
Keyword(s):  
Charge Carrier ◽  
Time Dependent ◽  
Carrier Recombination ◽  
Charge Carrier Recombination

Bi-doped Graphitic Carbon Nitride Nanotubes Boosts the Degradation Photocatalysis of Rhodamine B

2022 ◽  
Author(s):  
Qingqing Gao ◽  
Qian Lei ◽  
Ruoyan Miao ◽  
Manyi Gao ◽  
Fang Song ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Rhodamine B ◽  
High Stability ◽  
Carbon Nitride ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Efficiency ◽  
Metal Free ◽  
Carrier Recombination ◽  
Charge Carrier Recombination ◽  
Polymeric Carbon

Polymeric carbon nitride (PCN) is an emerging metal-free photocatalysts with high stability but is plagued by low photocatalytic efficiency due to the rapid charge carrier recombination behavior. Herein, Bi doped...

scholarly journals Impact of charge carrier recombination and energy disorder on the open-circuit voltage of polymer solar cells

2020 ◽  
Vol 69 (4) ◽  
pp. 046101
Author(s):  
Qing-Zhong Zhou ◽  
Feng Guo ◽  
Ming-Rui Zhang ◽  
Qing-Liang You ◽  
Biao Xiao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Carrier Recombination ◽  
Energy Disorder ◽  
Charge Carrier Recombination

Effect of dihydronaphthyl-based C60 bisadduct as third component materials on the photovoltaic performance and charge carrier recombination of binary PBDB-T : ITIC polymer solar cells

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8483-8495 ◽  
Author(s):  
Shengli Niu ◽  
Zhiyong Liu ◽  
Ning Wang
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Carrier Recombination ◽  
Binary Polymer ◽  
Component Material ◽  
Charge Carrier Recombination

A dihydronaphthyl-based C60 bisadduct (NCBA) acceptor was introduced as a third component material to typical binary polymer solar cells (PSCs).

Partial oxidation of the absorber layer reduces charge carrier recombination in antimony sulfide solar cells

2017 ◽  
Vol 19 (2) ◽  
pp. 1425-1430 ◽  
Author(s):  
Karl C. Gödel ◽  
Bart Roose ◽  
Aditya Sadhanala ◽  
Yana Vaynzof ◽  
Sandeep K. Pathak ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Solar Cells ◽  
Charge Carrier ◽  
Partial Oxidation ◽  
Absorber Layer ◽  
Antimony Sulfide ◽  
Carrier Recombination ◽  
Charge Carrier Recombination ◽  
Sensitized Solar Cells

A controlled heat treatment of the absorber layer in air leads to improved Sb2S3 sensitized solar cells. A reduction in charge carrier recombination is the reason for the enhancement.

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