Synthesis of a Fully Conjugated Phthalocyanine‐Diketopyrrolopyrrole‐Phthalocyanine Triad as Low Band Gap Donor in Small Molecule Bulk Heterojunction Solar Cells | Zendy

Molina Desiré | Zendy; Guerrero Antonio | Zendy; GarciaBelmonte Germà | Zendy; FernándezLázaro Fernando | Zendy; SastreSantos Ángela | Zendy

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Synthesis of a Fully Conjugated Phthalocyanine‐Diketopyrrolopyrrole‐Phthalocyanine Triad as Low Band Gap Donor in Small Molecule Bulk Heterojunction Solar Cells

Author(s) -

Molina Desiré,

Guerrero Antonio,

GarciaBelmonte Germà,

FernándezLázaro Fernando,

SastreSantos Ángela

Publication year - 2014

Publication title -

european journal of organic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.825

H-Index - 155

eISSN - 1099-0690

pISSN - 1434-193X

DOI - 10.1002/ejoc.201400147

Subject(s) - phthalocyanine , pedot:pss , chemistry , photochemistry , conjugated system , energy conversion efficiency , heterojunction , organic solar cell , band gap , triad (sociology) , polymer solar cell , protonation , optoelectronics , materials science , layer (electronics) , organic chemistry , polymer , psychology , ion , psychoanalysis

We describe the synthesis and photovoltaic properties of a fully conjugated phthalocyanine‐diketopyrrolopyrrole‐phthalocyanine triad (ZnPc‐DPP‐ZnPc) that presents strong visible absorption from 400 to 900 nm. The synthesis of the phthalocyanine with full conjugation to diketopyrrolopyrrole provides access to a new family of low band gap materials (<1.6 eV). Organic solar cells employing bulk heterojunction ZnPc‐DPP‐ZnPc:PC 70 BM films using MoO 3 as anodic interfacial layer (IFL) show a power conversion efficiency of 1.04 %. The power conversion efficiency decreases considerably by using PEDOT:PSS as interfacial layer as a consequence of protonation of the ZnPc.

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