organic light emitting diodes oleds

... xvi Phosphorescent materials for OLEDs Chapter 1.1 Introduction Mechanism and structures of organic light- emitting diodes (OLEDs) Light- emitting materials for OLEDs 1.2.1 Fluorescent materials ... Electroluminescence is obtained from light- emitting diodes (LEDs) when incorporating the light- emitting layer between the anode and cathode Single layer OLED device includes anode, light- emitting layer and cathode, ... materials for OLEDs Chapter CH3 N O O Al N N N O Alq3 n CH3 N TPD PPV Figure 1.1 Molecular structures of Alq3, TPD and PPV 1.1 Mechanism and structure of organic light- emitting diodes (OLEDs) Electroluminescence...

Ngày tải lên: 10/09/2015, 15:54

... VanSlyke SA: Organic electroluminescent diodes Appl Phys Lett 1987, 51:913 Tatsuo M, Takaaki I, Teruyoshi Mizutani J: Electroluminescent properties of organic light- emitting diodes with blue -emitting ... tandem organic light- emitting diodes based on bulk heterojunction organic bipolar charge generation layer Appl Phys Lett 2011, 98:243309 D'Andrade BW, Forrest SR: White organic light- emitting devices ... diodes; HOMO-LUMO; QWS Background Since the report by Tang and VanSlyke on organic light- emitting diodes (OLEDs) , [1,2] OLEDs have become a popular research subject due to its several technical...

Ngày tải lên: 06/05/2014, 08:55

... to their high efficiency, phosphorescent organic light- emitting diodes [PHOLEDs] are promising light- emitting materials in organic light- emitting diodes [OLEDs] An internal quantum efficiency of ... well structures in organic light- emitting devices Appl Phys Lett 2009, 95:103303 10 Kim SH, Jang J, Hong JM, Lee JY: High efficiency phosphorescent organic light emitting diodes using triplet ... and green PHOLEDs [1, 2] However, the performance of blue PHOLEDs still needs to be improved for lighting applications Light emission in PHOLEDs depends on the properties of the organic material...

Ngày tải lên: 20/06/2014, 23:20

... polymer light- emitting diodes by blade coating method Appl Phys Lett 2008, 93:153308-153303 Kopola P, Tuomikoski M, Suhonen R, Maaninen A: Gravure printed organic light emitting diodes for lighting ... Keywords: organic light- emitting diodes; electrospray, polymer, conformation Introduction During the last two decades, intense academic and industrial research has been devoted on organic light- emitting ... printing of doped polymers for organic light emitting devices Pardo DA, Jabbour GE, Peyghambarian N: Application of screen printing in the fabrication of organic light- emitting devices Adv Mater...

Ngày tải lên: 20/06/2014, 23:20

... spectroscopy (XPS) Flexible PEDOT:PSS anodes were fabricated to replace ITO in flexible organic lightemitting diodes (FOLED) FOLEDs based on the modified PEDOT:PSS anodes have a comparable performance to ... Characterization of FOLEDs Double layer FOLEDs with a hole transport layer of TPD and emitting/ electron transport layer of Alq3 film sandwiched between DMSO modified PEDOT:PSS anode and a LiF/Al cathode FOLEDs ... modified polymeric anodes, FOLEDs were fabricated and compared with the FOLEDs of ITO anodes A lower turn voltage and higher luminous intensity were achieved These FOLEDs based on the modified...

Ngày tải lên: 22/06/2014, 00:20

... known as small molecular OLEDs (SM -OLEDs) Within three years, Burroughes et al [6] developed long chain conjugated polymer based OLEDs (P -OLEDs) based on a single active organic semiconductor layer ... search for light- emitting devices based on organic crystals such as anthracene [32] , a significant breakthrough in achieving high electrical efficiency OLEDs using small molecular based organic ... analysis A.3 XIX Chapter Introduction CHAPTER INTRODUCTION 1.1 Background Using organic materials for light- emitting diodes (LED) is fascinating due to their vast variety and the relative ease of...

Ngày tải lên: 11/09/2015, 10:17

... encapsulating organic light- emitting diodes with thin films Other than the quality of the encapsulation film, the surface roughness is also a factor limiting the stability and the efficiency of the OLEDs ... an organic and inorganic composite structure is used in OLED encapsulation The quality of encapsulation depends on the materials, surface topography and the adhesion between the organic and inorganic ... as electrons and holes injected from the cathode and anode respectively, recombine in the organic light- emitting layer hν Figure 1.1 OLED structure showing injection of electrons from the cathode...

Ngày tải lên: 05/10/2015, 21:22

... array-based light emitting diodes Nano Research 2008, 1:123–128 [8] Alivov Ya.I, Van Nostrand JE, Look DC, Chukichev MV, Ataev BM: Observation of 430 nm electroluminescence from ZnO/GaN heterojunction light- emitting ... shussainawan@gmail.com JJ: jejen@ifm.liu.se ON: omeno@itn.liu.se MW: magwi@itn.liu.se Abstract Light- emitting diodes (LEDs) based on zinc oxide (ZnO) nanorods grown by vapor-liquid-solid catalytic growth ... footprint and large surface area to volume ratio are good candidates for heterojunction light- emitting diodes (LEDs) as compared to thin films This is due to the fact that the stress/strain due...

Ngày tải lên: 18/06/2014, 22:20

... Films for Organic Light Emissive Devices (OLEDs) 233 Sunyoung Sohn and Hwa-Min Kim Chapter 10 Micro-Cavity in Organic Light- Emitting Diode Young-Gu Ju Chapter 11 Fast-Response Organic Light- Emitting ... Taniguchi Chapter 12 Effect of High Magnetic Field on Organic Light Emitting Diodes 311 Toshihiro Shimada 275 Preface Organic light- emitting diodes (OLED) are playing a major role in information ... Photophysical Properties of Pyrene-Based Multiply Conjugated Shaped Light- Emitting Architectures: Toward Efficient Organic- Light- Emitting Diodes 21 Jian-Yong Hu and Takehiko Yamato Chapter Organometallic...

Ngày tải lên: 19/06/2014, 21:20

... types of functionalized pyrenebased light- emitting monomers, namely, pyrene-cored organic light- emitting monomers and pyrene-functionalized PAHs-cored organic light- emitting monomers were fully presented ... benzene-cored light- emitting monomers (21-26) Synthesis and Photophysical Properties of Pyrene-Based Multiply Conjugated Shaped Light- Emitting Architectures: Toward Efficient Organic- Light- Emitting Diodes ... fluorene-based light- emitting monomers (27-33) Synthesis and Photophysical Properties of Pyrene-Based Multiply Conjugated Shaped Light- Emitting Architectures: Toward Efficient Organic- Light- Emitting Diodes...

Ngày tải lên: 19/06/2014, 21:20

... pyrene-cored light emitting dendrimers (51) Synthesis and Photophysical Properties of Pyrene-Based Multiply Conjugated Shaped Light- Emitting Architectures: Toward Efficient Organic- Light- Emitting Diodes ... pyrene-based light- emitting polymers (66-69 and 70-75) 75 Synthesis and Photophysical Properties of Pyrene-Based Multiply Conjugated Shaped Light- Emitting Architectures: Toward Efficient Organic- Light- Emitting ... Photophysical Properties of Pyrene-Based Multiply Conjugated Shaped Light- Emitting Architectures: Toward Efficient Organic- Light- Emitting Diodes 47 oligomers with fewer fluorene units It was well known...

Ngày tải lên: 19/06/2014, 21:20

... sensitized and found to serve as good 84 Organic Light Emitting Diode – Material, Process and Devices candidates of red -light emitting materials for OLEDs These dendrimers have been prepared ... from triplet states of organic chromophores has very low rate constant and cannot compete with non-radiative quenching at room temperature Consequently, it 70 Organic Light Emitting Diode – Material, ... upper statistical limit of 25 per cent in OLEDs based on pure organic polymers In order to compel the triplet excitons to emit light and to useful work in OLEDs one needs to incorporate special...

Ngày tải lên: 19/06/2014, 21:20

... White organic light- emitting devices using a phosphorescent sensitizer Applied Physics Letters, Vol 82, pp 4224-4226 Chou, P.T & Chi, Y (2007) Phosphorescent dyes for organic light- emitting diodes ... Phosphorescent Organic Light- Emitting Diodes with Simple Structure that the MQW structure improves the external quantum efficiency with no change in the CIE coordinate of red emitting PHOLEDs 3.4 ... desirable from the manufacturing perspective 102 Organic Light Emitting Diode – Material, Process and Devices In recent years, white phosphorescent OLEDs (PHOLEDs) have received a great deal of attention...

Ngày tải lên: 19/06/2014, 21:20

... four High Efficiency Red Phosphorescent Organic Light- Emitting Diodes with Simple Structure 125 times that of fluorescent organic light- emitting devices (OLEDs) (Gong et al., 2002; Tsuzuki et al., ... and lighting production High Efficiency Red Phosphorescent Organic Light- Emitting Diodes with Simple Structure 139 We have also demonstrated high efficiency red PHOLEDs comprising only single emitting ... concept for highly efficient PHOLEDs has potential uses in future display and lighting applications High Efficiency Red Phosphorescent Organic Light- Emitting Diodes with Simple Structure 137...

Ngày tải lên: 19/06/2014, 21:20

... phosphorescent organic light- emitting diodes, Organic Electron.10: 1146-1151 Liu, S W., Lee, J H., Lee, C C., Chen, C T & Wang, J K (2007) Charge carrier mobility of mixed-layer organic light- emitting diodes, ... Efficiency Red Phosphorescent Organic Light- Emitting Diodes with Simple Structure 145 Tse, S C., Tsung, K K & So, S K (2007) Single-layer organic light- emitting diodes using naphthyl diamine, ... highly efficient, long-life organic light- emitting diodes, Chemistry – An Asian Journal 4: 742753 Lee, J.-H., Lin, T.-C., Liao, C.-C & Yang, F H (2005) Study on organic light- emitting device with more...

Ngày tải lên: 19/06/2014, 21:20

... small-molecular organic light- emitting diodes with a polytetrafluoroethylene barrier, Appl Phys Lett., Vol 82, No 2, pp 155-158, ISSN: 0021-8979 Guo F.and Ma D (2005), White organic light- emitting diodes ... for the organic light- emitting diodes, J Organometallic Chemistry, Vol 691, No 12, pp 2701- 2707, ISSN: 0022-328X Lu H and Yokoyama M (2003), Enhanced emission in organic light- emitting diodes ... complex with high electron mobility for organic light- emitting diodes, Appl Phys Lett Vol 82, No 8, pp 1296-1299, ISSN: 0021-8979 Organic Light Emitting Diodes Based on Novel Zn and Al Complexes...

Ngày tải lên: 19/06/2014, 21:20

... mobility for organic lightemitting diodes, Appl Phys Let., Vol 92, No 10, 103305, ISSN: 0021-8979 Xu X., Yu G., Liu Y.,and Zhu D (2006), Electrode modification in organic light- emitting diodes, Displays, ... factors determining the 196 Organic Light Emitting Diode – Material, Process and Devices viability of the patterning method for active matrix organic light emitting diode (AMOLEDs) depend on the given ... buffer-layer in organic light- emitting diodes, Applied Surface Science, Vol 252, No 6, pp 2355-2359, ISSN: 0169-4332 Wei X., Yang G, Cheng J., Lu Z., and Xie M (2007), Synthesis of novel light emitting...

Ngày tải lên: 19/06/2014, 21:20

... indicating a smooth surface and giving an efficient light output of 83 cd/A for a green OLED and 37 cd/A for a red OLED 230 Organic Light Emitting Diode – Material, Process and Devices Fig 26 ... T Thermal stability of organic thin-film transistors with self-assembled monolayers dielectrics, Appl Phys Lett., Vol 96, pp 053302-1 – 053302-3 (2010) 232 Organic Light Emitting Diode – Material, ... of the TCO materials used in some of the organic light emissive devices (OLEDs) that have been studied extensively to date, the performance of various OLEDs, and a brief outlook Chapter focuses...

Ngày tải lên: 19/06/2014, 21:20

... Transparent Conductive Oxide (TCO) Films for Organic Light Emissive Devices (OLEDs) 247 function of oxygen deposition pressure and film growth temperature for OLEDs. (Kim et al., 2003) For a 200-nm-thick ... that the intensity of ZnO(002) peak for the TZO films by the RFS system slightly increased with increasing 250 Organic Light Emitting Diode – Material, Process and Devices deposition thickness On ... Organic Light Emitting Diode – Material, Process and Devices Fig 23 Selection principle for exclusive measurement of surface-parallel lattice planes in a θ/2θ scan 2.6 Novel materials 2.6.1 Organic...

Ngày tải lên: 19/06/2014, 21:20

... Micro-Cavity in Organic Light- Emitting Diode Young-Gu Ju Department of Physics Education, Kyungpook National University Korea Introduction The study on micro-cavity in organic light- emitting diode(OLED) ... MEH-PPV Light- Emitting Diodes Fabricated on The Flexible Substrate Synthetic Metals, Vol.130, No.1, (August 2002), pp 55-60, ISSN 0379-6779 Transparent Conductive Oxide (TCO) Films for Organic Light ... Qadri, S.B & Kafafi, Z.H (2003) Anode Material Based on Zr-Doped ZnO Thin Films for Organic Light- Emitting Diodes Applied Physics Letters, Vol.83, No.18, (September 2003), pp 3809-3811, ISSN...

Ngày tải lên: 19/06/2014, 21:20