Effect of solvent additive and ethanol treatment on the performance of PIDTDTQx:PC71BM polymer solar cells

Zhu, Xixiang; Zhang, Fujun; An, Qiaoshi; Huang, Hui; Sun, Qianqian; Li, Lingliang; Feng, Tao; Tang, Weihua

doi:10.1016/j.solmat.2014.10.006

Cited by 20 publications

(16 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…27,44,45 The interfacial dipole layer is beneficial to increase the built-in field, resulting in the increased V OC of PSCs. [47][48][49] Therefore, the working solvents have a relatively fast volatilization process compared with the DIO additive from the active layers. S7.…”

Section: Resultsmentioning

confidence: 99%

A two-step strategy to clarify the roles of a solution processed PFN interfacial layer in highly efficient polymer solar cells

et al. 2015

Self Cite

View full text Add to dashboard Cite

† Electronic Supplementary Information (ESI) available: [detailed J-V characteristic curves; the key parameters of PSCs dependence on the soaking time; the work functions of active layers]. SeeSolution processed PFN interfacial layer has been demonstrated as an efficient method to improve the performance of polymer solar cells (PSCs). The champion power conversion efficiency (PCE) of PSCs with PBT7-Th:PC 71 BM as the active layer was increased from 6.13% to 7.72% by directly spin-coating PFN methanol solution on the surface of active layers or to 8.50% for the active layer with 4 min PFN methanol solution soaking. The champion PCE of PSCs was further increased to 8.69% for the active layers with a twosteps treatment, 4 min methanol soaking and then directly spin-coating PFN methanol solution. A 12.6% PCE improvement was obtained by using the two-steps strategy compared with directly spin-coating PFN methanol solution on the active layers. The methanol soaking the active layers plays the key role in forming the more ideal vertical phase separation for efficient exciton dissociation, charge carrier transport and collection. An ultrathin PFN interfacial dipole layer can be obtained by directly spin-coating PFN methanol solution. The two-steps strategy may provide a simple and effective method to finely optimize the phase separation and obtain an ultrathin PFN interfacial dipole layer for the performance improvement of PSCs.

show abstract

Section: Resultsmentioning

confidence: 99%

A two-step strategy to clarify the roles of a solution processed PFN interfacial layer in highly efficient polymer solar cells

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…In view of the current predictive results, apparently, the performance is still far from being satisfactory for virtual screening. From our current knowledge of OPV devices, the power conversion efficiency is very sensitive to the device processing conditions, including polymer purities, processing solvents [27], the additives [28,29], the annealing methods [30,31], device structures [32,33], and interfacial materials [34]. The measurement conditions, for example, tested in a N 2 -filled glove box or after encapsulation and the environment temperature, will also affect the value of PCEs.…”

Section: Svm Rf Ensemblementioning

confidence: 99%

Virtual Screening of Conjugated Polymers for Organic Photovoltaic Devices Using Support Vector Machines and Ensemble Learning

Chen

2019

International Journal of Polymer Science

View full text Add to dashboard Cite

Herein, we report virtual screening of potential semiconductor polymers for high-performance organic photovoltaic (OPV) devices using various machine learning algorithms. We particularly focus on support vector machine (SVM) and ensemble learning approaches. We found that the power conversion efficiencies of the device prepared with the polymer candidates can be predicted with their structure fingerprints as the only inputs. In other words, no preliminary knowledge about material properties was required. Additionally, the predictive performance could be further improved by “blending” the results of the SVM and random forest models. The resulting ensemble learning algorithm might open up a new opportunity for more precise, high-throughput virtual screening of conjugated polymers for OPV devices.

show abstract

“…A series of polar solvents has been screened with this method to control the morphologyo fBHJ films. [104][105][106] Similar to other solvent-related methods, the solubility parameter of the soaking solventp lays ar ole in the effect of the treatment. Polar solvents with as olubility parameter (d)a pproachingt hat of PC 61 BM are more likely to drive migration of PC 61 BM to form bigger aggregates.…”

Section: Solvent Soakingmentioning

confidence: 99%

Understanding Solvent Manipulation of Morphology in Bulk‐Heterojunction Organic Solar Cells

Chen

Zhan

Yao

2016

Chemistry An Asian Journal

View full text Add to dashboard Cite

Film morphology greatly influences the performance of bulk-heterojunction (BHJ)-structure-based solar cells. It is known that an interpenetrating bicontinuous network with nanoscale-separated donor and acceptor phases for charge transfer, an ordered molecular packing for exciton diffusion and charge transport, and a vertical compositionally graded structure for charge collection are prerequisites for achieving highly efficient BHJ organic solar cells (OSCs). Therefore, control of the morphology to obtain an ideal structure is a key problem. For this solution-processing BHJ system, the solvent participates fully in film processing. Its involvement is critical in modifying the nanostructure of BHJ films. In this review, we discuss the effects of solvent-related methods on the morphology of BHJ films, including selection of the casting solvent, solvent mixture, solvent vapor annealing, and solvent soaking. On the basis of a discussion on interaction strength and time between solvent and active materials, we believe that the solvent-morphology-performance relationship will be clearer and that solvent selection as a means to manipulate the morphology of BHJ films will be more rational.

show abstract

Effect of solvent additive and ethanol treatment on the performance of PIDTDTQx:PC71BM polymer solar cells

Cited by 20 publications

References 34 publications

A two-step strategy to clarify the roles of a solution processed PFN interfacial layer in highly efficient polymer solar cells

A two-step strategy to clarify the roles of a solution processed PFN interfacial layer in highly efficient polymer solar cells

Virtual Screening of Conjugated Polymers for Organic Photovoltaic Devices Using Support Vector Machines and Ensemble Learning

Understanding Solvent Manipulation of Morphology in Bulk‐Heterojunction Organic Solar Cells

Contact Info

Product

Resources

About