Issue 12, 2020

A new family of liquid and solid guanidine-based n-type dopants for solution-processed perovskite solar cells

Abstract

We present a series of new dopants based on a bicyclcic guanidine-type structure, 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD), for organic semiconductors. A series of TBD derivatives that were alkylated at the 7-position were synthesized and their physical properties were determined. These stable dopants were shown to be effective n-type dopants for [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM), poly{[N,N′-bis(2-octyldodecyl)naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)} (P(NDI2OD-T2)) and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene (ITIC). Films of PC61BM doped with 10 mol% of a dimeric derivative of TBD had electrical conductivities of 0.065 S cm−1. The utility of the dopants was further shown by doping electron transport layers of PC61BM with 2TBD-C10 for methyl ammonium lead iodide (MAPbI3) solar cells leading to improved fill factors and PCEs relative to undoped ETLs.

Graphical abstract: A new family of liquid and solid guanidine-based n-type dopants for solution-processed perovskite solar cells

Supplementary files

Article information

Article type
Research Article
Submitted
01 Jul 2020
Accepted
27 Jul 2020
First published
27 Jul 2020

Mater. Chem. Front., 2020,4, 3616-3622

Author version available

A new family of liquid and solid guanidine-based n-type dopants for solution-processed perovskite solar cells

H. Nakayama, J. A. Schneider, M. Faust, H. Wang, J. Read de Alaniz and M. L. Chabinyc, Mater. Chem. Front., 2020, 4, 3616 DOI: 10.1039/D0QM00437E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements