Constructing bulk defective perovskite SrTiO3 nanocubes for high performance photocatalysts

Nanoscale ◽  
2016 ◽  
Vol 8 (38) ◽  
pp. 16963-16968 ◽  
Author(s):  
Guoqiang Zhang ◽  
Wenshuai Jiang ◽  
Shixin Hua ◽  
Haifeng Zhao ◽  
Ligong Zhang ◽  
...  
Keyword(s):  
Charge Separation ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Separation Process

Defects (Ti3+ or oxygen vacancies) have been demonstrated to promote the charge separation process in SrTiO3 based photocatalysts.

Theoretical study on mesoscopic-size impurity effects in the charge separation process of organic photocells

2018 ◽  
Vol 20 (21) ◽  
pp. 14846-14854
Author(s):  
Tomomi Shimazaki ◽  
Motomichi Tashiro ◽  
Takahito Nakajima
Keyword(s):  
Charge Separation ◽  
High Performance ◽  
Theoretical Study ◽  
Bulk Heterojunction ◽  
Separation Process ◽  
Impurity Effects ◽  
Heterojunction Structure ◽  
Donor And Acceptor

A bulk-heterojunction structure is often employed to develop high-performance organic photocells, in which the donor and acceptor regions are complexly intertwined.

Adjusting surface oxygen vacancies prompted perovskite as high performance cathode for solid oxide fuel cell

2021 ◽  
Vol 865 ◽  
pp. 158746
Author(s):  
Yongchao Niu ◽  
Xiaoju Yin ◽  
Chengzhi Sun ◽  
Xueqin Song ◽  
Naiqing Zhang
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Surface Oxygen

scholarly journals Carbon Nanodots as a Potential Transport Layer for Boosting Performance of All-Inorganic Perovskite Nanocrystals-based Photodetector

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 717
Author(s):  
Hassan Algadi ◽  
Ahmad Umar ◽  
Hasan Albargi ◽  
Turki Alsuwian ◽  
Sotirios Baskoutas
Keyword(s):  
Charge Separation ◽  
High Performance ◽  
Band Alignment ◽  
Transport Layer ◽  
Carbon Nanodots ◽  
Separation Mechanism ◽  
Perovskite Layer ◽  
Inorganic Perovskite ◽  
Highly Efficient ◽  
Efficient Charge

A low-cost and simple drop-casting method was used to fabricate a carbon nanodot (C-dot)/all-inorganic perovskite (CsPbBr3) nanosheet bilayer heterojunction photodetector on a SiO2/Si substrate. The C-dot/perovskite bilayer heterojunction photodetector shows a high performance with a responsivity (R) of 1.09 A/W, almost five times higher than that of a CsPbBr3-based photodetector (0.21 A/W). In addition, the hybrid photodetector exhibits a fast response speed of 1.318/1.342 µs and a highly stable photocurrent of 6.97 µA at 10 V bias voltage. These figures of merits are comparable with, or much better than, most reported perovskite heterojunction photodetectors. UV–Vis absorption and photoluminescent spectra measurements reveal that the C-dot/perovskite bilayer heterojunction has a band gap similar to the pure perovskite layer, confirming that the absorption and emission in the bilayer heterojunction is dominated by the top layer of the perovskite. Moreover, the emission intensity of the C-dot/perovskite bilayer heterojunction is less than that of the pure perovskite layer, indicating that a significant number of charges were extracted by the C-dot layer. The studied band alignment of the C-dots and perovskites in the dark and under emission reveals that the photodetector has a highly efficient charge separation mechanism at the C-dot/perovskite interface, where the recombination rate between photogenerated electrons and holes is significantly reduced. This highly efficient charge separation mechanism is the main reason behind the enhanced performance of the C-dot/perovskite bilayer heterojunction photodetector.

Oxygen vacancies boosted charge separation towards enhanced photodegradation ability over 3D/2D Z-scheme BiO1−XBr/Fe2O3 heterostructures

2021 ◽  
Vol 269 ◽  
pp. 118693
Author(s):  
Wenli Zhao ◽  
Wenliang Wang ◽  
Tongyu Han ◽  
Hongtao Wang ◽  
Haochun Zhang ◽  
...  
Keyword(s):  
Charge Separation ◽  
Oxygen Vacancies

Gradient Oxygen Vacancies in V2O5/PEDOT Nanocables for High-Performance Supercapacitors

2018 ◽  
Vol 2 (1) ◽  
pp. 668-677 ◽  
Author(s):  
Wenchao Bi ◽  
Yingjie Wu ◽  
Chaofeng Liu ◽  
Jichao Wang ◽  
Yuchuan Du ◽  
...  
Keyword(s):  
High Performance ◽  
Oxygen Vacancies

scholarly journals Water Splitting: In Situ Formation of Oxygen Vacancies Achieving Near‐Complete Charge Separation in Planar BiVO 4 Photoanodes (Adv. Mater. 26/2020)

2020 ◽  
Vol 32 (26) ◽  
pp. 2070198 ◽  
Author(s):  
Songcan Wang ◽  
Tianwei He ◽  
Peng Chen ◽  
Aijun Du ◽  
Kostya (Ken) Ostrikov ◽  
...  
Keyword(s):  
Water Splitting ◽  
Charge Separation ◽  
Oxygen Vacancies ◽  
In Situ Formation

V-rich Bi2S3 nanowire with efficient charge separation and transport for high-performance and robust photoelectrochemical application under visible light

2020 ◽  
Vol 350 ◽  
pp. 47-55
Author(s):  
Yuan-Yuan Geng ◽  
Chun-Lan Tao ◽  
Shi-Fang Duan ◽  
Jovan San Martin ◽  
Yixiong Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Charge Separation ◽  
High Performance ◽  
Efficient Charge
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