An asymmetric wide-bandgap acceptor simultaneously enabling highly efficient single-junction and tandem organic solar cells

Abstract

The ternary and tandem strategies are effective methods for improving the photovoltaic performance of organic solar cells (OSCs). Here an asymmetric wide-bandgap nonfullerene acceptor named AITC is synthesized. AITC with...

In situandex situinvestigations on ternary strategy and co-solvent effects towards high-efficiency organic solar cells

“…Among the device engineering approaches, the ternary-component strategy has become the most popular topic in recent years. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] Pursuing favorable morphological evolution in ternary systems is at the core of optimizing new OSC materials towards excellent performances. Consequently, one of the main goals of OSC research is to determine the morphology tuning effect of the ternary-component strategy.…”

Boosting Efficiency of Non‐Fullerene Organic Solar Cells Via Introducing Multidimensional Second Acceptors

“…[ 1–3 ] In recent years, the emergence and stunning rise of ITIC‐ and Y‐series non‐fullerene acceptors, as well as a subtly device engineering, have boosted the power conversion efficiency (PCE) to a new breakthrough. Currently, the PCE of a single‐junction OSCs has reached 19% [ 4,5 ] and that of a tandem device is more than 20%. [ 6 ]…”

Highly efficient ternary solar cells with reduced non-radiative energy loss and enhanced stability via two compatible non-fullerene acceptors

“…[33][34][35][36] Zhang et al reported the lower non-radiative voltage of ternary OSCs by incorporating an asymmetric medium bandgap (1.75 eV) acceptor AITC on the basics of 3,9-bis(2-methylene(3-(1,1dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2 0 ,3 0 -d 0 ]-s-indaceno[1,2-b:5,6-b 0 ]dithiophene (ITIC) derivatives 16 as the third component in the PM6:BTP-eC9 system, contributing to the improved open-circuit voltage (V oc ) of OSCs. 37 Zhu et al designed a Y6 analogue, AQx-3, and introduced it into the PM6:Y6 binary system, and over 18% PCE improvement was realized in the optimized ternary OSCs relatively beneting from the alloy-like composites formed by two acceptors with superior lm morphology. 38 Hence, the rational choice of the guest acceptor plays a key role in promoting the ternary device performance.…”