oledimproving functionality in oleds novaled materials enable oled manufacturer to use the benefits...
TRANSCRIPT
OLEDMatEriaLs
for Display & Lighting Applications
Novaled MaterialsNovaled is an expert in synthetic and analytical chemistry – offering high performance materials for OE devices such as OLEDs.
The world of Organic Electronics is still young but proves its relevance by impressive market growth rates.
For Organic Light Emitting Diodes market research specialists expect a substantial growth in both the more mature display field and the OLED lighting industry which is just taking off. The same is true emerging markets like Organic Photo Voltaic and other OE. The Novaled materials are well established in different markets. It is known for im-proving the functionality of OLED and OPV devices, and is relevant for many other OE applications like OTFTs.
ORGA
OLED Other Organic Electronics
NIC ELECTRONICS
Lighting
(Organic Light Emitting Diode)
Display OPV(Organic Photovoltaic)
• Illumination• Signage
• TV• Mobile phone
• Organic Solar Cell (OSC)
• Display• RFID tag
OTFT(Organic Thin Film Transistor)
OLED display products OLED lighting products
2008 2009 2010
Sources: Pira, NanoMarkets, DisplaySearch
1,057826
615
2011 2016
Sales in Mio. USD (est.)Sales in Mio. USD
2,000
50
Ansgar Werner Senior Manager Head of Business Line Materials
Application fields for Novaled technology and materials in Organic Electronics
Increasing OE device performance
OLED (Lighting) OLED (Display) OPV(Organic Photovoltaic)
OTFT(Organic Thin Film Transistor)
Dopant materials for p- and n-side
Transport and blocking materials
Internal outcoupling materials
External outcoupling materials
Novaled is developing materials such as dopant, transport, interlayer and outcoupling materials suitable for different applications.
The Novaled materials lead to significantly increased efficiencies, longer lifetimes and a low voltage need for OLEDs. Our dedicated materials for OLED lighting im-prove also performance characteristics like angular emission and light outcou-pling. Novaled materials supports vacuum and solution processing and decreases man-ufacturing costs.
Performance improvement and cost reduction for OLEDs, OSCs and other OE devices are crucial factors to our customers. Novaled materials contribute substantially to both factors. Another value-add is an easy production handling of our materials.
Functionality of Novaled materials in different OE applications
Improving OSC and OTFT performance
Materials for OSCs ...enable ˘ PIN Tandem solar cells for high short circuit voltage ˘ Simpler stack designs ˘ Easier Manufacturing ˘ High stability ˘ Long lifetime ˘ Optimized thickness for harvesting of the complete sun spectrum
Materials for OTFT ...enable ˘ Area selective contact doping ˘ Reduced contact resistance ˘ Complementary TFT ˘ Use of less expensive contact materials (replace Gold) ˘ Perfect working with a wide range of OTFT materials ˘ Both vacuum and solution processing ˘ Increased mobility and high response frequency
Stacking unit
Electrodep-HTLEML
n-ETLElectrode
Electroden-ETL
Absorber 2
p-HTLAbsorber 1
Electrode
SourceInjection
DrainInjection
Semiconductor
GateInsulator
Electrode
OLED 1
OLED 2
Electrode
Electrode
OLED
Electrode
Internal outcoupling Electrode
OLED
Electrode
External outcoupling
n-ETLp-HTLStacking unit
Electrodep-HTLEML
n-ETLElectrode
Electroden-ETL
Absorber 2
p-HTLAbsorber 1
Electrode
SourceInjection
DrainInjection
Semiconductor
GateInsulator
Electrode
OLED 1
OLED 2
Electrode
Electrode
OLED
Electrode
Internal outcoupling Electrode
OLED
Electrode
External outcoupling
n-ETLp-HTL
OSC scheme
OTFT scheme
Hole Side (p-HTL) Electron Side (n-ETL)
Transport & Blocking Materials NHT-5NHT-18NHT-49
NET-5 NET-8 NET- 18
Dopant Materials NDP-2 NDP-9
NDN-1 NDN-26
p-n-junction Material NET-39 Outcoupling Materials NLE-17
NET-61
Overview of selected Novaled materials
Stacking unit
Electrodep-HTLEML
n-ETLElectrode
Electroden-ETL
Absorber 2
p-HTLAbsorber 1
Electrode
SourceInjection
DrainInjection
Semiconductor
GateInsulator
Electrode
OLED 1
OLED 2
Electrode
Electrode
OLED
Electrode
Internal outcoupling Electrode
OLED
Electrode
External outcoupling
n-ETLp-HTL
relevant layers for Novaled materials
Improving functionality in OLEDsNovaled materials enable OLED manufacturer to use the benefits of PIN-OLED such as better product performance, simpler stack design, easier manufacturing in their products
Doping and transport materials …˘ Provide very low operating voltage and sustain or improve efficiency and lifetime of OLED device˘ Offer a unique combination of OLED performance and process compatibility: Evaporation temperature in reasonable range for simple process control High device stability because no diffusion of dopants in matrix layer even at high temperatures Low vapor pressure, no cross-contamination˘ Can be adapted to solution processes (high trough-put coating and printing techniques)˘ Solution processed Novaled p-HTL materials improve yield˘ Passed mass production tests of our customers˘ Are created for our customers based on extensive know-how on OLED design
Materials for stacking OLEDs ... ˘ Enable very low operating voltage˘ Improve drastically operational stability˘ Reduce absorption losses˘ Enable metal free stacked structures
Optical outcoupling materials ... ˘ Improve light extraction of OLED devices Internal use of added function materials for bottom-emission OLEDs External use of top emission OLEDs ˘ Improve efficiencies significantly˘ Enable white top-emission OLEDs without microcavity effects˘ Avoid viewing angle dependent color coordinate shift
Stacking unit
Electrodep-HTLEML
n-ETLElectrode
Electroden-ETL
Absorber 2
p-HTLAbsorber 1
Electrode
SourceInjection
DrainInjection
Semiconductor
GateInsulator
Electrode
OLED 1
OLED 2
Electrode
Electrode
OLED
Electrode
Internal outcoupling Electrode
OLED
Electrode
External outcoupling
n-ETLp-HTL
Stacking unit
Electrodep-HTLEML
n-ETLElectrode
Electroden-ETL
Absorber 2
p-HTLAbsorber 1
Electrode
SourceInjection
DrainInjection
Semiconductor
GateInsulator
Electrode
OLED 1
OLED 2
Electrode
Electrode
OLED
Electrode
Internal outcoupling Electrode
OLED
Electrode
External outcoupling
n-ETLp-HTL
Stacking unit
Electrodep-HTLEML
n-ETLElectrode
Electroden-ETL
Absorber 2
p-HTLAbsorber 1
Electrode
SourceInjection
DrainInjection
Semiconductor
GateInsulator
Electrode
OLED 1
OLED 2
Electrode
Electrode
OLED
Electrode
Internal outcoupling Electrode
OLED
Electrode
External outcoupling
n-ETLp-HTL
Stacking unit
Electrodep-HTLEML
n-ETLElectrode
Electroden-ETL
Absorber 2
p-HTLAbsorber 1
Electrode
SourceInjection
DrainInjection
Semiconductor
GateInsulator
Electrode
OLED 1
OLED 2
Electrode
Electrode
OLED
Electrode
Internal outcoupling Electrode
OLED
Electrode
External outcoupling
n-ETLp-HTL
relevant layers for Novaled materials
Material development directions
Further material development goals are e.g.: ˘ Higher lifetime especially at high temperatures ˘ Outcoupling materials to further increase efficiency ˘ Customize materials for solution processing to reduce production cost and focus on Higher stability Cross linking Adaption to commercial solvents and industrial coating processes
Time
Devi
ce p
erfo
rman
ce Lifetime
2010 2013
Power efficiency
Operating voltageCost
Target
Target
Time
Proc
ess p
erfo
rman
ce
Air stability
2010 2013
Thermal stability
Solution processing (complexity/cost)Target
Target
Examples for high performance fully fluorescent OLEDs
Red top emission OLED*** (temperature stable) Key features: ˘ Lifetime (LT50) >35,000h at 85°C ˘ Stable to storage at 120°C ˘ Driving voltage*: 2.3V
White bottom emission OLED*** Novaled outcoupling materials can be inserted into the active part of OLED stacks
Key features: ˘ Measured power efficiency*: 28 lm/W with Novaled outcoupling materials**, no foil 34 lm/W with additional outcoupling foil ˘ Driving voltage*: 3.1V ˘ Color coordinates: CIE: 0.45/0.42
*at 1000cd/m2 **Data measured in calibrated integrating sphere ***using fluorescent emitters
Electrode
Electrode
n-ETL:NET-18
with 10% NDN-26 doping
p-HTL:NHT-18
with 3% NDP-9 doping
Emitter Layer
Electrode
Electrode
n-ETL:NET18
with 10% NDN-26 doping
p-HTL:NHT-49
with 3% NDP-9 doping
Emitter Layer
Internal outcoupling: NET-61
Novaled materials used in this stack
Electrode
Electrode
n-ETL:NET-18
with 10% NDN-26 doping
p-HTL:NHT-18
with 3% NDP-9 doping
Emitter Layer
Electrode
Electrode
n-ETL:NET18
with 10% NDN-26 doping
p-HTL:NHT-49
with 3% NDP-9 doping
Emitter Layer
Internal outcoupling: NET-61
Novaled materials used in this stack
Electrode
Electrode
n-ETL:NET-18
with 10% NDN-26 doping
p-HTL:NHT-18
with 3% NDP-9 doping
Emitter Layer
Electrode
Electrode
n-ETL:NET18
with 10% NDN-26 doping
p-HTL:NHT-49
with 3% NDP-9 doping
Emitter Layer
Internal outcoupling: NET-61
Novaled materials used in this stack
Novaled materials leading to impressive device performances
Novaled Material PropertiesNovaled doping technology implements far more than conventional organic material structures. Thermal stability and ease of handling are key features of Novaled materials.
Tg: glass transition temperaturen.a.: not applicable
Material Characteristics
From absorp-tion spectrum
From DSC From TGA From Cyclic Voltammetry
Material Class Material Conductivity (S/cm, ref)
Band Gap (eV) Tg (°C)
T@mass loss 0,5% (°C)
HOMO (eV)
LUMO (eV)
Transport / Blocking Material Electron Side
NET-5 3.5e-4 (with 10% NDN-1) 3.3 105 298 -6.1 -2.5
NET-8 1.5e-6 (with 5% NDN-26) 3.2 139 409 -6.0 -2.5
NET-18 9.3e-6 (with 10% NDN-26) 3.3 131 356 -6.3 -2.6
Doping Material Electron Side
NDN-1 3.5e-4 (10% in NET-5) n.a. n.a. 310 -2.6 n.a.
NDN-265.2e-7 (10% in NET-5)
4,9 n.a. 237 -1.7 n.a.9.3e-6 (10% in NET-18)
Transport / Blocking Material Hole Side
NHT-5 8.1e-5 (with 1% NDP-2) 3.0 143 409 -4.9 -1.6
NHT-18 2.6e-5 (with 3% NDP-9) 3.0 134 448 -5.1 -1.6
NHT-49 3.5e-5 (with 3% NDP-9) 3.0 141 478 -5.2 -1.9
Doping Material Hole Side
NDP-2 8.1e-6 (1% in NHT-5) 2.4 n.a. 274 n.a. -5.0
NDP-92.6e-5 (3% in NHT-18)
2.3 n.a. 289 n.a. -5.13.5e-5 (3% in NHT-49)
p-n-junctionMaterial NET-39 n.a. 2.5 176 344 -5.8 -3.0
Outcoupling Material
NLE-17 n.a. 3.4 n.a. 226 -5.4 n.a.
NET-61 n.a. 3.3 n.a. 259 n.a. -2.7
NEW
NEW
NEW
NEW
Novaled AG Tatzberg 49 01307 Dresden Germany Tel +49(0)351/7 96 58-0 Fax +49(0)351/7 96 58-29 [email protected]
www.novaled.com
Novaled AG is a world leading company in the OLED field specialized in high efficiency long lifetime OLEDs and an expert in synthetic and analytical chemistry. The company offers its Novaled PIN OLED® technology along with its proprietary OLED materials as well as R&D contracting, manufacturing of customized OLEDs and further services. Novaled has a strong IP position in OLED technology based on more than 400 patents granted or pending.
Following flyers are available:
COMPANY TECHNOLOGY+PERFORMANCE
ORGANICELECTRONICS
MATERIALS LIGHTING KNOW HOW+CONSULTING
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