Colloidal Synthesis, Optical Properties, and Hole Transport Layer Applications of Cu2BaSnS4 (CBTS) Nanocrystals

2019 ◽  
Vol 2 (5) ◽  
pp. 3049-3055 ◽  
Author(s):  
Rayan Chakraborty ◽  
Kyu Min Sim ◽  
Megha Shrivastava ◽  
K. V. Adarsh ◽  
Dae Sung Chung ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hole Transport ◽  
Transport Layer ◽  
Colloidal Synthesis ◽  
Hole Transport Layer

Optical properties of P- type polypyrrole thin film synthesized by pulse laser deposition technique: Hole transport layer in electroluminescence devices

Optik ◽  
2019 ◽  
Vol 194 ◽  
pp. 163034 ◽  
Author(s):  
Srimathi Krishnaswamy ◽  
Veena Ragupathi ◽  
Sudarkodi Raman ◽  
Puspamitra Panigrahi ◽  
Ganapathi Subramaniam Nagarajan
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Pulse Laser Deposition ◽  
Hole Transport ◽  
Transport Layer ◽  
Laser Deposition ◽  
Pulse Laser Deposition Technique ◽  
Hole Transport Layer ◽  
Deposition Technique ◽  
P Type

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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