Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 26, Pages 23757-23764Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b05567
Keywords
PTAA; molecular weight; perovskite solar cell; mechanical properties; stability
Funding
- Stanford Precourt Institute
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Education [2017R1A6A3A03004813]
- National Science Foundation [DGE-1656518, ECCS-1542152]
- National Research Foundation of Korea [2017R1A6A3A03004813] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
The effect of tuning molecular weight (M-n) in poly[bis (4-phenyl) (2,4,6-trimethylphenyl)amine] (PTAA) to increase both mechanical properties of the film and electrical properties of perovskite solar cells is reported. Perovskite solar cell devices are fabricated to investigate the effect of M-n on power conversion efficiency. Moisture stability for various M-n is also studied in PTAA films exposed to mechanical loads in humid environments. Furthermore, cohesion and tensile tests are employed to determine the mechanical properties of PTAA, where higher M-n leads to more robust films. To elucidate the effect of M-n on the debonding kinetics, a viscoelastic fracture kinetic model is proposed as a function of M-n, and the debonding mechanism is found to be dependent on M-n. Finally, the effect of small-molecule-based dopants on the mechanical stability of PTAA is investigated.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available