Charge Transfer in Ternary Solar Cells Employing Two Fullerene Derivatives: Where do Electrons Go?

  title={Charge Transfer in Ternary Solar Cells Employing Two Fullerene Derivatives: Where do Electrons Go?},
  author={Andreas Sperlich and Michael Auth and Vladimir Dyakonov},
  journal={Israel Journal of Chemistry},
Earlier reports demonstrated that ternary organic solar cells (OSC) made of donor polymers (D) blended with different mixtures of fullerene acceptors (A:A) performed very similarly. This finding is surprising, as the corresponding fullerene LUMO levels are slightly different, which might result in decisive differences in the charge transfer step. We investigate ternary OSC (D:A:A) made of the donor polymer P3HT with stoichiometric mixtures of different fullerene derivatives, PC60BM:PC70BM and… 

Figures and Tables from this paper


Charge transfer state energy in ternary bulk-heterojunction polymer–fullerene solar cells
Abstract. In ternary bulk heterojunction solar cells based on a semiconducting biphenyl-dithienyldiketopyrrolopyrrole copolymer donor and two different fullerene acceptors that distinctly differ in
Fullerene derivative acceptors for high performance polymer solar cells.
Recently, several series of new fullerene derivatives with higher-lying LUMO energy level and better solubility were reported in recent years for further improving the power conversion efficiency of the PSCs.
Photoinduced C70 radical anions in polymer:fullerene blends
Photoinduced polarons in solid films of polymer-fullerene blends were studied by photoluminescence (PL), photoinduced absorption (PIA) and electron spin resonance (ESR). The donor materials used were
Microstructural and Electronic Origins of Open‐Circuit Voltage Tuning in Organic Solar Cells Based on Ternary Blends
Organic ternary heterojunction photovoltaic blends are sometimes observed to undergo a gradual evolution in open-circuit voltage (Voc) with increasing amounts of a second donor or an acceptor. The
How the Energetic Landscape in the Mixed Phase of Organic Bulk Heterojunction Solar Cells Evolves with Fullerene Content
Energy levels in the mixed polymer:fullerene phase of three-phase bulk heterojunction solar cells are significantly shifted from their values in the pure materials. These shifts provide an important
Influence of Fullerene Ordering on the Energy of the Charge-Transfer State and Open-Circuit Voltage in Polymer:Fullerene Solar Cells
The influence of fullerene side chain functionalization on both the morphology and electro-optical properties of bulk-heterojunction polymer:fullerene solar cells is discussed through a systematic
Functional fullerenes for organic photovoltaics
Tremendous progress has been made on the design and processing of new active and interfacial materials to enable organic photovoltaics to achieve high power conversion efficiencies of >10%. In this
Efficient ternary blend bulk heterojunction solar cells with tunable open-circuit voltage.
It is suggested that ternary blends provide a potentially effective route toward maximizing the attainable J(sc)V(oc) product in BHJ solar cells and that with judicious selection of donor and acceptor components, solar cells with efficiencies exceeding the theoretical limits for binary blend solar cells could be possible without sacrificing the simplicity of a single active-layer processing step.
Open circuit voltage and efficiency in ternary organic photovoltaic blends
Organic bulk heterojunction solar cells based on ternary blends of two donor absorbers and one acceptor are investigated by experiments and modeling. The commonly observed continuous tunability of
Fullerene-bisadduct acceptors for polymer solar cells.
  • Yongfang Li
  • Chemistry, Medicine
    Chemistry, an Asian journal
  • 2013
Recent progress in high-efficiency fullerene-bisadduct acceptors is discussed, including the bisadduct of PCBM, indene-C60 bisadduction (ICBA), indenes-C70 bisad duct (IC70BA), DMPCBA, NCBA, and bisTOQC and the applications of an ICBA acceptor in new device structures and with other conjugated polymer donors than P3HT are introduced and discussed.