scholarly journals Study of electrical characterization of 2-methyl-9, 10-di(2-naphthyl)anthracene doped with tungsten oxide as hole-transport layer

2009 ◽  
Vol 95 (3) ◽  
pp. 033501 ◽  
Author(s):  
Ming-Ta Hsieh ◽  
Meng-Huan Ho ◽  
Kuan-Heng Lin ◽  
Jenn-Fang Chen ◽  
Teng-Ming Chen ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Electrical Characterization ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer

Molecular Self-Assembly Routes to Optically Functional Thin Films: Electroluminescent Multilayer Structures

1997 ◽  
Vol 488 ◽  
Author(s):  
W. Li ◽  
J. E. Malinsky ◽  
H. Chou ◽  
W. Ma ◽  
L. Geng ◽  
...  
Keyword(s):  
Self Assembly ◽  
Chemical Characterization ◽  
Hole Transport ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Hole Transport Layer ◽  
Layer By Layer ◽  
Self Assembled ◽  
Precursor Molecules

AbstractThis contribution describes the use of layer-by-layer self-limiting siloxane chemisorption processes to self-assemble structurally regular multilayer organic LED (OLED) devices. Topics discussed include: 1) the synthesis of silyl-functionalized precursor molecules for hole transport layer (HTL), emissive layer (EML), and electron transport layer (ETL) self-assembly, 2) the use of layer-by-layer self-assembly for ITO electrode modification/passivation/hole-electron balancing in a vapor-deposited device, 3) the microstructure/chemical characterization of HTL self-assembly using a prototype triarylamine precursor, 4) fabrication and properties of a hybrid self-assembled + vapor deposited two-layer LED, 4) fabrication and properties of a fully self-assembled two-layer OLED.

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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