scholarly journals Enhanced Photoelectrochemical Water Oxidation Performance in Bilayer TiO 2 /α‐Fe 2 O 3 Nanorod Arrays Photoanode with Cu:NiO x as Hole Transport Layer and Co‐Pi as Cocatalyst

ChemSusChem ◽  
2021 ◽  
Author(s):  
Hongxing Li ◽  
Meisong Yin ◽  
Xianglin Li ◽  
Rong Mo
Keyword(s):  
Water Oxidation ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Nanorod Arrays ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation

Ultrathin Ti3C2 nanosheets served as a high-efficient hole transport layer on Fe2O3 photoanode for photoelectrochemical water oxidation

2021 ◽  
Author(s):  
Chenchen Feng ◽  
Han Fu ◽  
Henan Jia ◽  
Haize Jin ◽  
xiang cheng ◽  
...  
Keyword(s):  
Surface Modification ◽  
Catalytic Reaction ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Oxidation Activity ◽  
High Efficient ◽  
Photoelectrochemical Water Oxidation

Surface modification of oxygen evolution reaction (OER) cocatalysts is a promising approach to improve PEC water oxidation activity by accelerating the surface charge injection efficiency and catalytic reaction kinetics. However,...

Fluorine and tin co-doping synergistically improves the photoelectrochemical water oxidation performance of TiO2 nanorod arrays by enhancing the ultraviolet light conversion efficiency

2019 ◽  
Vol 48 (32) ◽  
pp. 12096-12104 ◽  
Author(s):  
Tong Wu ◽  
Changlong Chen ◽  
Yuling Wei ◽  
Ranran Lu ◽  
Leshuang Wang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Conversion Efficiency ◽  
Water Oxidation ◽  
Uv Light ◽  
Nanorod Arrays ◽  
Co Doping ◽  
Tio2 Nanorod Arrays ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation ◽  
Light Conversion Efficiency

Fluorine and tin co-doping changes the electronic structure of rutile TiO2 nanorod arrays, leading to much-enhanced UV light conversion efficiency and significantly improved photoelectrochemical water oxidation performance.

scholarly journals Degradation mechanism of hybrid tin-based perovskite solar cells and the critical role of tin (IV) iodide

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Luis Lanzetta ◽  
Thomas Webb ◽  
Nourdine Zibouche ◽  
Xinxing Liang ◽  
Dong Ding ◽  
...  
Keyword(s):  
Degradation Mechanism ◽  
Critical Role ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Environmental Stability ◽  
Hole Transport Layer ◽  
Future Design ◽  
Cyclic Degradation ◽  
Stability Issues

AbstractTin perovskites have emerged as promising alternatives to toxic lead perovskites in next-generation photovoltaics, but their poor environmental stability remains an obstacle towards more competitive performances. Therefore, a full understanding of their decomposition processes is needed to address these stability issues. Herein, we elucidate the degradation mechanism of 2D/3D tin perovskite films based on (PEA)0.2(FA)0.8SnI3 (where PEA is phenylethylammonium and FA is formamidinium). We show that SnI4, a product of the oxygen-induced degradation of tin perovskite, quickly evolves into iodine via the combined action of moisture and oxygen. We identify iodine as a highly aggressive species that can further oxidise the perovskite to more SnI4, establishing a cyclic degradation mechanism. Perovskite stability is then observed to strongly depend on the hole transport layer chosen as the substrate, which is exploited to tackle film degradation. These key insights will enable the future design and optimisation of stable tin-based perovskite optoelectronics.

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