Discotic Liquid Crystals for Opto-Electronic Applications

Kaafarani, Bilal R.

doi:10.1021/cm102117c

Cited by 475 publications

(315 citation statements)

References 221 publications

Supporting

Mentioning

304

Contrasting

Unclassified

Order By: Relevance

“…Mesoscopic ordering of anisotropic molecules or particles in fluid states, known as liquid crystalline (LC) phase, has attracted a great deal of research attention for the significance in display devices and highly ordered materials processing [1][2][3][4]. Among various liquid crystals, carbonaceous mesophases are of particular research interest, as they offer valuable routes to functional carbon based materials [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Rheological properties of graphene oxide liquid crystal

Kumar

Maiti

Lee

et al. 2014

Carbon

131

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Rheological properties of graphene oxide liquid crystal

Kumar

Maiti

Lee

et al. 2014

Carbon

131

View full text Add to dashboard Cite

“…Finally, the application of liquid crystals would not be limited to photovoltaics by new methodologies of molecular mixing [74,75]. …”

Section: Discussionmentioning

confidence: 99%

Discotic Liquid Crystalline Blends for Nano-Structure Formation Toward Bulk Heterojunction Active Layer in Organic Photovoltaics

Shimizu

2014

Nanoscience With Liquid Crystals

View full text Add to dashboard Cite

Liquid crystalline semiconductor is a new category of organic semiconductors and lots of studies on the materials and application to electronic devices have been carried out. In particular, organic thin film photovoltaics is an interesting research field by use of liquid crystalline semiconductors because of the characteristic properties of liquid crystals. In this chapter, the miscibility in liquid crystals and the related issues on the application of liquid crystalline semiconductors are overviewed to give an insight for their possible contribution to the drastic improvement of organic photovoltaics technology including the fabrication by printed electronics.

show abstract

“…Experimental results showed that the change of the position of the pyridyl N-atoms varied the dipoledipole interactions of molecules and the self-assemble behaviors of molecules in films, which led to different device performance.  -Conjugated disk-shaped molecules such as pyrene and hexa-peri-hexabenzocoronene can form highly ordered onedimensional stacks through intermolecular - interactions [43], which provides a pathway for carrier transport. Kimura and co-workers [44] synthesized disk-shaped small molecular donors 18a and 18b, which were composed of a planar pyrene core and oligothiophenes arms.…”

Section: Donors With Sulfur-containing Heterocycle-based Electron-donmentioning

confidence: 99%

Recent progress of bulk heterojunction solar cells based on small-molecular donors

Huang

2013

Chin. Sci. Bull.

View full text Add to dashboard Cite

Organic bulk heterojunction (BHJ) solar cells based on small molecular donors have received great attentions recently, because small molecules possess the merits of high purity, well-defined molecular structures, definite molecular weights and high charge carrier mobility. The highest power conversion efficiency (PCE) of BHJ solar cells based on small molecular donors and fullerene derivative acceptors has reached 7.38%. In this review, we will briefly summarize the development of small molecular donor based BHJ solar cells in the past two years. These results suggest that small molecular donors are promising candidates for high efficiency BHJ solar cells. Due to the environmental constraints and the predicatable exhaustion of fossil energy resources, it is one of the major challenges in the 21st century to find clean and renewable energy. Solar energy which has the potential to act as renewable and clean energy sources is believed one of the promising and long term alternatives to replace fossil energy in the future. Currently, solar cells based on silicon have been practically applied, however, the high cost hinders their wide applications. Comparing with the well-studied silicon solar cells, photovoltaic devices based on organic semiconductors have attracted great attentions recently because they can be fabricated on flexible substrate with large scale at low-cost [1,2]. In this review, we will mainly focus on the development of organic BHJ solar cells. Organic BHJ solar cells consist of electrodes (cathode and anode), donor and acceptor blended active layer and substrate. Based on the donor used into solar cells, they can be briefly divided into two classes, polymer donor solar cells and small molecular donor solar cells. Currently, the polymer donor solar cells have made great progress [3][4][5][6][7], and the highest power conversion efficiency (PCE) reported in literatures has been over 8% [8,9]. In spite of the high performance, there are disadvantages for polymer donors [10], for instance, the high molecular weight dispersity, the batch to batch reproducibility, and so on. On the other hand, small molecular donors do not have the drawbacks mentioned above. In contrast, they have high purity, well-defined molecular structures, definite molecular weights, as well as high charge carrier mobility [11]. As a result, small molecular donors have attracted more and more attentions for photovoltaic applications recently and the highest PCE of BHJ devices based on small molecular donors has reached 7.38% [12].Considering several reviews have summarized the application of small molecular donors in BHJ solar cells [13][14][15][16][17][18][19][20][21], in the present review, we will mainly focus on the development of small molecular donor BHJ solar cells in the past two years. The review will classify the donors based on their device fabrication technique. And the principle of organic solar cells which can be found in the previous reviews

show abstract

Discotic Liquid Crystals for Opto-Electronic Applications

Cited by 475 publications

References 221 publications

Rheological properties of graphene oxide liquid crystal

Rheological properties of graphene oxide liquid crystal

Discotic Liquid Crystalline Blends for Nano-Structure Formation Toward Bulk Heterojunction Active Layer in Organic Photovoltaics

Recent progress of bulk heterojunction solar cells based on small-molecular donors

Contact Info

Product

Resources

About