recombination loss
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2022 ◽  
pp. 560-568
Author(s):  
Yi-Chun Chin ◽  
Matyas Daboczi ◽  
Charlie Henderson ◽  
Joel Luke ◽  
Ji-Seon Kim

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Shuai Yue ◽  
Lu Chen ◽  
Manke Zhang ◽  
Zhe Liu ◽  
Tao Chen ◽  
...  

AbstractThe recombination loss of photo-carriers in photocatalytic systems fatally determines the energy conversion efficiency of photocatalysts. In this work, an electrostatic field was used to inhibit the recombination of photo-carriers in photocatalysts by separating photo-holes and photo-electrons in space. As a model structure, (010) facet-exposed BiVO4 nanowires were grown on PDMS-insulated piezo-substrate of piezoelectric transducer (PZT). The PZT substrate will generate an electrostatic field under a certain stress, and the photocatalytic behavior of BiVO4 nanowires is influenced by the electrostatic field. Our results showed that the photocatalytic performance of the BiVO4 nanowires in CO2 reduction in the negative electrostatic field is enhanced to 5.5-fold of that without electrostatic field. Moreover, the concentration of methane in the products was raised from 29% to 64%. The enhanced CO2 reduction efficiency is mainly attributed to the inhibited recombination loss of photo-carriers in the BiVO4 nanowires. The increased energy of photo-carriers and the enhanced surface absorption to polar molecules, which are CO in this case, were also play important roles in improving the photocatalytic activity of the photocatalyst and product selectivity. This work proposed an effective strategy to improve photo-carriers separation/transfer dynamics in the photocatalytic systems, which will also be a favorable reference for photovoltaic and photodetecting devices.


2021 ◽  
Author(s):  
Yun Liu ◽  
Zilong Zheng ◽  
Veaceslav Coropceanu ◽  
Jean-Luc Bredas ◽  
David S Ginger

Understanding the factors controlling radiative and non-radiative transition rates for charge transfer states in organic systems is important for applications ranging from organic photovoltaics (OPV) to lasers and LEDs. We...


2021 ◽  
Vol 14 (4) ◽  
pp. 2419-2428 ◽  
Author(s):  
Min Ju Jeong ◽  
Kyung Mun Yeom ◽  
Se Jin Kim ◽  
Eui Hyuk Jung ◽  
Jun Hong Noh

Halide perovskite solar cells (PSCs) have recently shown a leap forward in performance by reducing the recombination loss at the interface between the perovskite and hole-transporting layers through surface treatment.


2021 ◽  
Author(s):  
Guojing Wang ◽  
Tao Chen ◽  
Shuo Liu ◽  
Fengqi Wang ◽  
Mingyang Li ◽  
...  

The low transfer efficiency and high recombination loss of photo-induced carriers in TiO2 are significant issues that hinder its photocatalytic activity. Herein, TiO2 nanoparticles (~5 nm) were loaded on MnO2...


2020 ◽  
Vol 29 (1) ◽  
pp. 98-108
Author(s):  
Masafumi Yamaguchi ◽  
Kan‐Hua Lee ◽  
Kenji Araki ◽  
Nobuaki Kojima ◽  
Yasuki Okuno ◽  
...  

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