A perylene diimide (PDI)-based small molecule with tetrahedral configuration as a non-fullerene acceptor for organic solar cells

Abstract

In this paper, a new perylene diimide (PDI)-based acceptor Me-PDI 4 with tetrahedral configuration (or 3D) has been synthesized and characterized. Solution-processed organic solar cells (OSCs) based on Me-PDI 4 have been investigated and our results show that the device performance can reach as high as 2.73%. Our new design with tetrahedral configuration (or 3D) could be an efficient approach to increase the PCE of OSCs with non-fullerene acceptors.

A twisted monomeric perylenediimide electron acceptor for efficient organic solar cells

“…It can be seen that TN-PDI (in chloroform, 10 -6 mol L −1 ) exhibits a broad absorption spectrum with two peaks at 528 and 613nm. Compared with the absorption spectrum in solution, the spectrum in thin film of TN-PDI shows a similar profile with only a relatively small shift of 5 nm, indicating weak molecular aggregation and intermolecular interaction in the solid state [51]. The optical feature could be assigned to the twisted structure of the perylene unit supported by the theoretical calculations.…”

Comparable charge transport property based on S···S interactions with that of π-π stacking in a bis-fused tetrathiafulvalene compound

“…Over the past decades, significant advances have been achieved in this field with the continuous enhancement of device performance, thanks to the development of novel high-performance organic semiconductors as well as device fabrication techniques [11][12][13][14][15][16]. It has been widely accepted that in organic semiconductors, condensed molecular packing with large π-orbital overlap and strong intermolecular electronic couplings is crucial for efficient charge transport and the achievement of high carrier mobility [17].…”

Design and synthesis of low band gap non-fullerene acceptors for organic solar cells with impressively high Jsc over 21 mA cm_2

“…Recently, non-fullerene acceptors (NFAs) have challenged the fullerene derivatives dominated positions owing to the easily tuned energy levels, broadened absorptions and facile synthesis process [9][10][11][12][13][14]. It is worthy to note that PCEs over 12% have been realized for the non-fullerene based OSCs, which opens a very promising avenue [15,16].…”

“…The related 1 H NMR, 13 C NMR spectrum and HR-MS mass spectrometry also attached in the SI. All of the TTIC-M, TTIC and TTIC-F exhibit preferable thermal stability up to 370, 350 and 350°C under nitrogen atmosphere by thermogravimetric analysis (TGA) (Fig.…”