Phenothiazine-Based Hole-Transporting Materials toward Eco-friendly Perovskite Solar Cells

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Salunke J., Guo X., Lin Z., Vale J., Candeias N., Nyman M., Dahlström S., Österbacka R., Priimagi A., Chang J., Vivo P.
Publisher: American Chemical Society
Publication year: 2019
Journal: ACS Applied Energy Materials
Volume number: 2
Issue number: 5
Start page: 3021
End page: 3027
ISSN: 2574-0962


Organic hole-transporting materials (HTMs), AZO-I and AZO-II, were synthesized via Schiff base chemistry by functionalizing a phenothiazine core with triarylamine(s) through azomethine bridges. Substantial enhancements in the power conversion efficiency (PCE = 12.6% and 14% for AZO-I and AZO-II, respectively) and stability (68% or 91% of PCE retained after 60 days for AZO-I or AZO-II, respectively) of perovskite solar cells (PSCs) were achieved when switching from mono- (AZO-I) to disubstituted (AZO-II) HTMs. The extremely low production costs (9 and 12 $/g for AZO-I and AZO-II, respectively), together with the Pd-catalyst-free synthesis, make these materials excellent candidates for low-cost and eco-friendly PSCs.


azomethine, eco-friendly, hole-transporting materials, low-cost, perovskite solar cells, phenothiazine

Last updated on 2020-02-04 at 08:27