Novel dithienopyrrole-based molecular donor materials for organic solar cells

2017 ◽  
Vol 10 (06) ◽  
pp. 1750085 ◽  
Author(s):  
Zong-Bing Zhang ◽  
Jia-Wei Xu ◽  
Xin-Yu Zhang ◽  
Shi-Xin Sun ◽  
Rong Xing
Keyword(s):  
Thermal Stability ◽  
Organic Solar Cells ◽  
Energy Levels ◽  
Visible Region ◽  
Solvent Vapor ◽  
Excellent Thermal Stability ◽  
Blend Films ◽  
Absorption Energy ◽  
Active Layers ◽  
Solvent Vapor Annealing

A new molecule with dithieno[3,2-b:2’,3’-d]pyrrole (DTP) as central moiety and two terminal diketopyrrolopyrrole (DPP) units named DPP-DTPC8 has been designed and synthesized. The push–pull molecule exhibits excellent thermal stability, strong absorption in visible region, and matched energy levels. Devices fabricated from DTPC8:PC[Formula: see text]BM blend films exhibit the maximum power conversion efficiency of 2.75%, with Voc of 0.63 V, Jsc of 9.94 mA[Formula: see text] cm[Formula: see text], and FF of 43.8%. The active layers undergo thermal annealing or solvent vapor annealing treatments, exhibiting inconspicuous influence on the aggregation of the molecule. This study demonstrates that the new molecule DPP-DTPC8 tailored with DTP and DPP units could affect the thermal stability, absorption, energy levels and morphology that manage the photovoltaic performances.

Functional tuning of A–D–A oligothiophenes: the effect of solvent vapor annealing on blend morphology and solar cell performance

2015 ◽  
Vol 3 (26) ◽  
pp. 13738-13748 ◽  
Author(s):  
Gisela L. Schulz ◽  
Mirjam Löbert ◽  
Ibrahim Ata ◽  
Marta Urdanpilleta ◽  
Mika Lindén ◽  
...  
Keyword(s):  
Solar Cell ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Solvent Vapor ◽  
Solar Cell Performance ◽  
Effect Of Solvent ◽  
Blend Morphology ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing ◽  
Conversion Efficiencies

A series of dicyanovinylene-substituted A–D–A oligothiophenes with cores of varying donor strength were developed for solution-processable organic solar cells, with significant enhancement in power conversion efficiencies upon solvent vapor annealing.

scholarly journals Stable P3HT: amorphous non-fullerene solar cells with a high open-circuit voltage of 1 V and efficiency of 4%

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20733-20741 ◽  
Author(s):  
HyunKyung Lee ◽  
Sora Oh ◽  
Chang Eun Song ◽  
Hang Ken Lee ◽  
Sang Kyu Lee ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Open Circuit Voltage ◽  
Energy Levels ◽  
Open Circuit ◽  
Good Thermal Stability

A 3D-shaped SF-HR was designed and synthesized for use in non-fullerene organic solar cells. Owing to the aligned energy levels, the P3HT:SF-HR system exhibited a high efficiency of 4.01% with good thermal stability and photostability.

Understanding the effect of solvent vapor annealing on solution-processed A–D–A oligothiophene bulk-heterojunction solar cells: the role of alkyl side chains

2016 ◽  
Vol 4 (7) ◽  
pp. 2571-2580 ◽  
Author(s):  
Cordula D. Wessendorf ◽  
Ana Perez-Rodriguez ◽  
Jonas Hanisch ◽  
Andreas P. Arndt ◽  
Ibrahim Ata ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solvent Vapor ◽  
Heterojunction Solar Cells ◽  
Effect Of Solvent ◽  
Vapor Annealing ◽  
Alkyl Side Chains ◽  
Solvent Vapor Annealing

Solvent vapor annealing (SVA) can strongly influence the morphology of oligomer:fullerene based organic solar cells.

The influence of the central acceptor unit on the optoelectronic properties and photovoltaic performance of A–D–A–D–A-type co-oligomers

2017 ◽  
Vol 4 (5) ◽  
pp. 755-766 ◽  
Author(s):  
Ibrahim Ata ◽  
Duško Popovic ◽  
Mika Lindén ◽  
Amaresh Mishra ◽  
Peter Bäuerle
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Molecular Structures ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

A series of A–D–A–D–A co-oligomers was developed and implemented as donor materials in solution-processable organic solar cells showing the dependence of molecular structures on the power conversion efficiency upon solvent vapor annealing.

scholarly journals Electron-to Hole Transport Change Induced by Solvent Vapor Annealing of Naphthalene Diimide Doped with Poly(3-Hexylthiophene)

2021 ◽  
Vol 9 ◽  
Author(s):  
Krzysztof Janus ◽  
Kinga Danielewicz ◽  
Dorota Chlebosz ◽  
Waldemar Goldeman ◽  
Adam Kiersnowski
Keyword(s):  
Crystal Structure ◽  
Field Effect Transistors ◽  
Energy Levels ◽  
Grazing Incidence ◽  
Hole Transport ◽  
Solvent Vapor ◽  
Electron Microscopies ◽  
Naphthalene Diimide ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

Herein we report on fabrication and properties of organic field-effect transistors (OFETs) based on the spray-coated films of N,N′-dioctyl naphthalene diimide (NDIC8) doped with 2.4 wt% of poly (3-hexylthiophene) (P3HT). OFETs with the untreated NDIC8:P3HT films revealed electron conductivity [μe* = 5 × 10–4 cm2×(Vs)−1]. After the annealing in chloroform vapor the NDIC8:P3HT films revealed the hole transport only [μh* = 0.9 × 10–4 cm2×(Vs)−1]. Due to the chemical nature and energy levels, the hole transport was not expected for NDIC8-based system. Polarized optical- and scanning electron microscopies indicated that the solvent vapor annealing of the NDIC8:P3HT films caused a transition of their fine-grained morphology to the network of branched, dendritic crystallites. Grazing incidence wide-angle X-ray scattering studies indicated that the above transition was accompanied by a change in the crystal structure of NDIC8. The isotropic crystal structure of NDIC8 in the untreated film was identical to the known crystal structure of the bulk NDIC8. After the solvent annealing the crystal structure of NDIC8 changed to a not-yet-reported polymorph, that, unlike in the untreated film, was partially oriented with respect to the OFET substrate.

Panchromatic ternary organic solar cells with 9.44% efficiency incorporating porphyrin-based donors

Nanoscale ◽  
2018 ◽  
Vol 10 (25) ◽  
pp. 12100-12108 ◽  
Author(s):  
Maida Vartanian ◽  
Pilar de la Cruz ◽  
Subhayan Biswas ◽  
Ganesh D. Sharma ◽  
Fernando Langa
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Solar Cells ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

A ternary solar cell with two porphyrin-based donors is prepared achieving a high PCE of 9.44% when solvent vapor annealing is applied.

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