Characterization, modeling, and analysis of organic light-emitting diodes with different structures

Chen, Huan-Ting; Choy, Wallace C. H.; Hui, S. Y. Ron

doi:10.1109/tpel.2015.2403618

Cited by 22 publications

(16 citation statements)

References 37 publications

(19 reference statements)

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“…These converters have high power density with a favourable reduction in the size of switched capacitors. [70][71][72][73][74][75] Thus, these topologies are highly attractive and the various SC converter topologies are shown in Figure 7. On the other hand, organic LEDs need dedicated LED drivers which are expensive compared to the other LEDs.…”

Section: Switched Capacitors For Organic Led Applicationsmentioning

confidence: 99%

An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

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LED lamps are projected as prospective successors of incandescent lamps with high efficiency and a long lifetime. Therefore, there is a need to develop energy efficient LED driver topologies for achieving constant current regulation, despite the effects of temperature on the LED V-I characteristics. This paper presents the salient features of various LED driver topologies with a focus on power density, multi-string operation, renewable energy utilization, soft switching, optical wireless communication, reliability and size. The performance of the above topologies is analysed in terms of the number of components, converter switching frequency, galvanic isolation, power rating and efficiency. This paper takes a look at efficiency improvement methods while dwelling on aspects of lifetime and reliability prediction of LED drivers. The paper will anticipate some of the future trends associated with the adaptation of wide bandgap power semiconductor materials, smart LED lighting for the internet of things (IoT) and programmable LED lamp drivers. This detailed technology review is extremely useful for researchers, designers and engineers in choosing the right topology.

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Section: Switched Capacitors For Organic Led Applicationsmentioning

confidence: 99%

An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

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“…It is assumed that the input electric power, P electric , for the OLED device is converted to both optical and thermal power, and that other types of converted energy are negligible. Based on energy conservation theory, the input electric power ideally can be expressed as [9,13]:…”

Section: Integration Of Sub-modelsmentioning

confidence: 99%

“…The last term, η rad , can be comprehended as the synthetic results of the photoluminescence of the acceptor and the transfer of singlet and triplet excitons from donors to acceptors [25]. Equations (7) and (9) show also that k light is the synthetic effect of η EE , γ, η S/T , and η rad . The luminescent light then encounters several optical ray-trapping mechanisms, such as the total internal effects in the substrate and other layers, as well as the surface plasma attenuation, etc.…”

Section: Integration Of Sub-modelsmentioning

confidence: 99%

“…The simulated maximum and minimum temperatures of the upper cover of the OLED are 31.0 • C and 26.3 • C, respectively. To compare these results with those of the experiment, relative errors for the models were calculated as the ratio of the difference between the measured and simulated values to the measured value [9]. These were 1.3% and 4.6% for the maximum and minimum temperatures, respectively.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…Several studies have constructed models for investigating the optical and thermal properties of OLEDs, with some also accounting for their electrical properties. Such models employ fluid dynamics, successive network reductions, equivalent circuits, spectral power distributions, and so on [2][3][4][5][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Integration of Optical and Thermal Models for Organic Light-Emitting Diodes

Wei

Huang

et al. 2018

Electronics

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This paper proposes a three-dimensional model for combinative analysis of the illuminative and thermal properties of organic light-emitting diodes (OLED). By means of the energy conversion ratio and energy conservation theory, two individual optical and thermal sub-models are integrated to form a single model constructed in a multi-physics platform. According to the measured luminous performance and temperature distribution of the fabricated OLED samples, the proposed model demonstrates sufficient accuracy. Moreover, the temperature distribution on the cross-section of the OLED can be derived from the proposed model and used as a valuable reference for manufacturers to select appropriate organic materials.

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Composite Materials for Application in Printed Electronics

Janeczek

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Advanced Composite Materials

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Characterization, modeling, and analysis of organic light-emitting diodes with different structures

Abstract: CitationThis article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication.

Cited by 22 publications

References 37 publications

An overview of energy efficient solid state LED driver topologies

An overview of energy efficient solid state LED driver topologies

Integration of Optical and Thermal Models for Organic Light-Emitting Diodes

Composite Materials for Application in Printed Electronics

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