A naphthalene diimide side-chain polymer as an electron-extraction layer for stable perovskite solar cells
Journal Article
·
· Materials Chemistry Frontiers
- School of Chemistry and Biochemistry; Georgia Institute of Technology; Atlanta; USA; Georgia Institute of Technology
- School of Chemistry and Biochemistry; Georgia Institute of Technology; Atlanta; USA
- Australian Research Council Centre of Excellence in Exciton Science; Department of Chemical Engineering; Monash University; Clayton; Australia
Poly(N-(5-(5-norbornene-2-carbonyl)oxy)pentyl)-N'-n-hexyl-naphthalene-1,8:4,5-bis(dicarboximide) has been synthesized by esterification of (N-(5-hydroxypentyl)-N'-n-hexyl-naphthalene-1,8:4,5-bis(dicarboximide)) with exo-5-norbornene-2-carboxylic acid, and has been polymerized using the first-generation Grubbs initiator. This side-chain polymer exhibits good transparency throughout the visible (absorption onset at ca. 400 nm), good solubility in common low- and medium-polarity organic solvents, good resistance to dimethylformamide, and appropriate electron affinity for use as an electron-extraction layer in lead-halide perovskite solar cells. The performance of this polymer in n-i-p perovskite solar cells was compared to that of several small-molecule naphthalene-1,8:4,5-bis(dicarboximide) derivatives and of SnO2. Solar cells using the polymer exhibited open-circuit voltages of up to 1.02 V, short-circuit currents of over 21 mA cm–2, and power conversion efficiencies (PCE) reaching 14% which stabilize at 13.8% upon 90 s of illumination. Meanwhile control SnO2 devices exhibited a PCE of ca. 16%, and small-molecule devices gave PCE values of less than 10%. Here, the devices employing the polymer exhibited improved long-term stability relative to the SnO2 control devices under continuous illumination.
- Research Organization:
- Univ. of Washington, Seattle, WA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- Grant/Contract Number:
- EE0008747
- OSTI ID:
- 1706107
- Alternate ID(s):
- OSTI ID: 1703710
OSTI ID: 1706114
OSTI ID: 1968853
- Journal Information:
- Materials Chemistry Frontiers, Journal Name: Materials Chemistry Frontiers Journal Issue: 1 Vol. 5; ISSN 2052-1537
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photo-Crosslinkable Naphthalene Diimide Polymer for Solution Processed n-i-p Perovskite Solar cells
Conference
·
Sat Nov 26 23:00:00 EST 2022
·
OSTI ID:1910043