Morphological modification induced by external electric field during solution process of organic solar cells

Ma, Shou-Yuan; Shen, Yuning; Yang, Po-Chun; Chen, Chao-Shuo; Lin, Ching−Fuh

doi:10.1016/j.orgel.2011.11.009

Cited by 21 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Molecular arrangement of donor and acceptor materials has great influence on photon harvesting and charge carrier transport and collection, which strongly determines the performance of PSCs. A series of effective methods were proposed to control the molecular arrangement, such as annealing treatment, solvent additive treatment, nanoimprint, and electric field treatment methods [13][14][15][16]. Ma et al reported that the PCE of PSCs with P3HT:PCBM as active layer was improved to 5% by annealing treatment on the active layer [17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Doping Phosphorescent Material and Annealing Treatment on the Performance of Polymer Solar Cells

Wang

Zhang

2013

International Journal of Photoenergy

View full text Add to dashboard Cite

A series of polymer solar cells (PSCs) with P3HT:PCBM or P3HT:PCBM:Ir(btpy)3blend films as the active layer were fabricated under the same conditions. Effects of phosphorescent material Ir(btpy)3doping concentration and annealing temperature on the performance of PSCs were investigated. The short-circuit current density (Jsc) and open-circuit voltage (Voc) are increased by adopting P3HT:PCBM:Ir(btpy)3blend films as the active layer when the cells do not undergo annealing treatment. The increasedJscshould be attributed to the increase of photon harvesting induced by doping phosphorescent material Ir(btpy)3and the effective energy transfer from Ir(btpy)3to P3HT. The effective energy transfer from Ir(btpy)3to P3HT was demonstrated by time-resolved photoluminescence (PL) spectra. The increasedVocis due to the photovoltaic effect between Ir(btpy)3and PCBM. The power conversion efficiency (PCE) of PSCs with P3HT:PCBM as the active layer is increased from 0.19% to 1.49% by annealing treatment at 140°C for 10 minutes. The PCE of PSCs with P3HT:PCBM:Ir(btpy)3as the active layer is increased from 0.49% to 0.95% by annealing treatment at lower temperature at 100°C for 10 minutes.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Doping Phosphorescent Material and Annealing Treatment on the Performance of Polymer Solar Cells

Wang

Zhang

2013

International Journal of Photoenergy

View full text Add to dashboard Cite

show abstract

“…In addition, by monitoring the sulphur 2p signal and the carbon:sulphur (C:S) ratio, it is possible to monitor both the relative P3HT:PCBM concentration and to differentiate between the active and PEDOT:PSS layers. 35,36 Figs. 3(a) and 3(b) show the XPS depth profiles for the unannealed and annealed devices, respectively.…”

mentioning

confidence: 99%

Towards the development of a virtual organic solar cell: An experimental and dynamic Monte Carlo study of the role of charge blocking layers and active layer thickness

Feron

Fell

Rozanski

et al. 2012

Applied Physics Letters

View full text Add to dashboard Cite

Monte Carlo (MC) simulations have been used to fully model organic solar cells. The quantum efficiency and short-circuit current of these virtual devices are in excellent agreement with experimental measurements. Simulations show that, contrary to expectation, indium tin oxide/ poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate)/poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methylester (PCBM)/aluminium devices lack effective charge blocking layers at the electrode interfaces. X-ray photoelectron spectroscopy depth profiling shows that despite a PCBM-rich region near the cathode, interface intermixing at the electrodes combined with incomplete PCBM coverage leads to significant interface recombination. This work highlights the effectiveness of MC simulations as a predictive tool and emphasizes the need to control electrode interface processes. V

show abstract

“…Ma et al 11 exerted electric field to the P3HT:PC61BM blend film during the fabrication of the BHJ solar cells to induce morphological modification. When the electric field of 5.0 Â 10 5 V/m was applied with the specific direction, it formed a P3HT-rich and rougher surface, compared with that of pristine active layer to improve the performance of the inverted PSCs.…”

Section: Effect Of Exerted Electric Fieldmentioning

confidence: 99%

Theoretical analysis and the morphology control of vertical phase segregation in high-efficiency polymer/fullerene solar cells

Gao

2013

High Performance Polymers

View full text Add to dashboard Cite

The morphology control and optimization in the film-forming process and nanoscale phase separation of donor/acceptor interpenetrating networks played an important role in improving the performance of organic solar cells. Vertical phase separation was defined as an inhomogeneous distribution or concentration gradient of polymer/fullerene blends in the spin-coated film, due to the surface energy of the respective components and their interaction with the substrate or the intermediate buffer layers. In this report, we demonstrated, in detail, the theory of vertical phase separation morphology and control of conventional structure solar cells and inverted configuration solar cells, including the choice of solvents and the drying rate, the surface energy control, thermal annealing, as well as external electric field. In particular, we first proposed internal electronic field model of vertical phase separation and revealed the internal rules and organic semiconductor physics and its mechanism for improving the device efficiency and stability.

show abstract

Morphological modification induced by external electric field during solution process of organic solar cells

Cited by 21 publications

References 25 publications

Effect of Doping Phosphorescent Material and Annealing Treatment on the Performance of Polymer Solar Cells

Effect of Doping Phosphorescent Material and Annealing Treatment on the Performance of Polymer Solar Cells

Towards the development of a virtual organic solar cell: An experimental and dynamic Monte Carlo study of the role of charge blocking layers and active layer thickness

Theoretical analysis and the morphology control of vertical phase segregation in high-efficiency polymer/fullerene solar cells

Contact Info

Product

Resources

About