High-performance polymer tandem devices combining solar cell and light-emitting diode

Kang, Hongkyu; Kim, Geunjin; Hwang, In‐Wook; Kim, Yong Hee; Lee, Kyu Cheol; Park, Sung Heum; Lee, Kwanghee

doi:10.1016/j.solmat.2012.08.007

Cited by 11 publications

(3 citation statements)

References 24 publications

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“…The results suggested that the presence of a conjugated system promotes electron transport and hole extraction processes. Kang et al [59] proposed LED devices with a high power conversion efficiency of 3.1% (AM 1.5 irradiation) and luminance of 8000 cd/m 2 [60]. For green OLED technology, Herrera et al [61] developed a nanocomposite system using a green design and fabrication route.…”

Section: Polymer/fullerene Nanocomposite For Leds: Insertion Of Green...mentioning

confidence: 99%

Polymer/Fullerene Nanocomposite for Optoelectronics—Moving toward Green Technology

et al. 2022

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Optoelectronic devices have been developed using the polymer/fullerene nanocomposite, as focused in this review. The polymer/fullerene nanocomposite shows significant structural, electronics, optical, and useful physical properties in optoelectronics. Non-conducting and conducting polymeric nanocomposites have been applied in optoelectronics, such as light-emitting diodes, solar cells, and sensors. Inclusion of fullerene has further broadened the methodological application of the polymer/fullerene nanocomposite. The polymeric matrices and fullerene may have covalent or physical interactions for charge or electron transportation and superior optical features. Green systems have also been explored in optoelectronic devices; however, due to limited efforts, further design innovations are desirable in green optoelectronics. Nevertheless, the advantages and challenges of the green polymer/fullerene nanocomposite in optoelectronic devices yet need to be explored.

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Section: Polymer/fullerene Nanocomposite For Leds: Insertion Of Green...mentioning

confidence: 99%

Polymer/Fullerene Nanocomposite for Optoelectronics—Moving toward Green Technology

et al. 2022

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“…Heterojunctions are widely used in optoelectronic devices such as light-emitting diodes (LEDs) [1][2][3][4], laser diodes [5,6], and photodiodes (PDs) [7][8][9] because they enable manipulating either hole or electron transport selectively by applying an appropriate band alignment. The specific band alignment can either increase carrier recombination in a LED or move photocarriers into appropriate contact in a PD.…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature, Chemically Grown Titanium Oxide Thin Films with a High Hole Tunneling Rate for Si Solar Cells

Lee

Lin

et al. 2016

Energies

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Abstract:In this paper, we propose a chemically grown titanium oxide (TiO 2 ) on Si to form a heterojunction for photovoltaic devices. The chemically grown TiO 2 does not block hole transport. Ultraviolet photoemission spectroscopy was used to study the band alignment. A substantial band offset at the TiO 2 /Si interface was observed. X-ray photoemission spectroscopy (XPS) revealed that the chemically grown TiO 2 is oxygen-deficient and contains numerous gap states. A multiple-trap-assisted tunneling (TAT) model was used to explain the high hole injection rate. According to this model, the tunneling rate can be 10 5 orders of magnitude higher for holes passing through TiO 2 than for flow through SiO 2 . With 24-nm-thick TiO 2 , a Si solar cell achieves a 33.2 mA/cm 2 photocurrent on a planar substrate, with a 9.4% power conversion efficiency. Plan-view scanning electron microscopy images indicate that a moth-eye-like structure formed during TiO 2 deposition. This structure enables light harvesting for a high photocurrent. The high photocurrent and ease of production of chemically grown TiO 2 imply that it is a suitable candidate for future low-cost, high-efficiency solar cell applications.

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“…Recently, OLED/OPV tandem devices have attracted great interest due to their potential uses in display and sensing applications and use for stand-alone operation isolated from electrical power sources. [5][6][7][8] For displays, the stacked OPV structure can serve as the light absorber and effectively reduce the ambient reection from the metal cathode to achieve a high contrast ratio and energy recycling efficiency. Optical sensors are another important application for this kind of bifunctional device.…”

Section: Introductionmentioning

confidence: 99%

Efficiency improvement of organic bifunctional devices by applying omnidirectional antireflection nanopillars

Liang

Liu

et al. 2014

RSC Adv.

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High-performance polymer tandem devices combining solar cell and light-emitting diode

Cited by 11 publications

References 24 publications

Polymer/Fullerene Nanocomposite for Optoelectronics—Moving toward Green Technology

Polymer/Fullerene Nanocomposite for Optoelectronics—Moving toward Green Technology

Low-Temperature, Chemically Grown Titanium Oxide Thin Films with a High Hole Tunneling Rate for Si Solar Cells

Efficiency improvement of organic bifunctional devices by applying omnidirectional antireflection nanopillars

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