Search Results - "Leem, Dong‐Seok"

Organic Upconversion Imager with Dual Electronic and Optical Readouts for Shortwave Infrared Light Detection by Li, Ning, Eedugurala, Naresh, Leem, Dong‐Seok, Azoulay, Jason D., Ng, Tse Nga

“…There remains a critical need for large‐area imaging technologies that operate in the shortwave infrared spectral region. Upconversion imagers that combine…”
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Efficient Organic Solar Cells with Solution-Processed Silver Nanowire Electrodes by Leem, Dong-Seok, Edwards, Angharad, Faist, Mark, Nelson, Jenny, Bradley, Donal D. C., de Mello, John C.

“…An effective method for reducing interelectrode shorting in silver nanowire (AgNW) based organic solar cells is reported. The method is applied to standard and…”
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High Performance Shortwave Infrared Organic Photodetectors Adopting Thiadiazole Quinoxaline‐Based Copolymers by Park, Insun, Kim, Changki, Kim, Raesung, Li, Ning, Lee, Jaejun, Kwon, Oh Kyu, Choi, Byoungki, Ng, Tse Nga, Leem, Dong‐Seok

“…Detection of light in the near‐infrared (NIR) and shortwave infrared (SWIR) spectral range is essential for the wide practical applications of biometrics,…”
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Noise and detectivity limits in organic shortwave infrared photodiodes with low disorder by Wu, Zhenghui, Li, Ning, Eedugurala, Naresh, Azoulay, Jason D., Leem, Dong-Seok, Ng, Tse Nga

“…To achieve high detectivity in infrared detectors, it is critical to reduce the device noise. However, for non-crystalline semiconductors, an essential…”
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Highly Responsive and Thermally Reliable Near‐Infrared Organic Photodiodes Utilizing Naphthalocyanine Molecules Tuned with Axial Ligands by Leem, Dong‐Seok, Lee, Kwang‐Hee, Li, Ning, Park, Bum Woo, Choi, Taejin, Ro, Takkyun, Kwon, Oh Kyu, Kwon, Young‐Nam, Ng, Tse Nga, Kim, Sunghan

“…Achieving high‐performance near‐infrared (NIR) photodiodes is in great demand for potential applications like biometrics, security, artificial vision,…”
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Narrow-Band Organic Photodiodes for High-Resolution Imaging by Han, Moon Gyu, Park, Kyung-Bae, Bulliard, Xavier, Lee, Gae Hwang, Yun, Sungyoung, Leem, Dong-Seok, Heo, Chul-Joon, Yagi, Tadao, Sakurai, Rie, Ro, Takkyun, Lim, Seon-Jeong, Sul, Sangchul, Na, Kyoungwon, Ahn, Jungchak, Jin, Yong Wan, Lee, Sangyoon

“…There are growing opportunities and demands for image sensors that produce higher-resolution images, even in low-light conditions. Increasing the light input…”
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Investigation of a Conjugated Polyelectrolyte Interlayer for Inverted Polymer:Fullerene Solar Cells by Xia, Ruidong, Leem, Dong-Seok, Kirchartz, Thomas, Spencer, Steve, Murphy, Craig, He, Zhicai, Wu, Hongbin, Su, Shijian, Cao, Yong, Kim, Ji Seon, deMello, John C., Bradley, Donal D.C., Nelson, Jenny

“…Inverted bulk heterojunction solar cells are fabricated using a conjugated polyelectrolyte (PFN) as a cathode interlayer. Enhanced photovoltaic performance is…”
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Effectiveness of p -dopants in an organic hole transporting material by Lee, Jae-Hyun, Leem, Dong-Seok, Kim, Hyong-Jun, Kim, Jang-Joo

“…We investigated the effectiveness of p -dopants to generate holes in a hole transporting material by comparing the absorption in visible-near-infrared and…”
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Highly efficient tandem p - i - n organic light-emitting diodes adopting a low temperature evaporated rhenium oxide interconnecting layer by Leem, Dong-Seok, Lee, Jae-Hyun, Kim, Jang-Joo, Kang, Jae-Wook

“…High quality interconnection units (ICUs) with a high transparency and superior charge gen erating capability for tandem organic light-emitting diodes (OLEDs)…”
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Morphology- and Orientation-Controlled Gallium Arsenide Nanowires on Silicon Substrates by Ihn, Soo-Ghang, Song, Jong-In, Kim, Tae-Wook, Leem, Dong-Seok, Lee, Takhee, Lee, Sang-Geul, Koh, Eui Kwan, Song, Kyung

“…GaAs nanowires were epitaxially grown on Si(001) and Si(111) substrates by using Au-catalyzed vapor−liquid−solid (VLS) growth in a solid source molecular beam…”
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Improvement of the luminous intensity of light-emitting diodes by using highly transparent Ag-indium tin oxide p-type ohmic contacts by Song, J.-O., Dong-Seok Leem, Joon Seop Kwak, Park, Y., Chae, S.W., Tae-Yeon Seong

“…We have investigated Ag-indium tin oxide (ITO) scheme for obtaining high-quality p-type ohmic contacts for GaN-based light-emitting diodes (LEDs). The Ag(1…”
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Reduced Graphene Oxide Electrodes for Large Area Organic Electronics by Wöbkenberg, Paul H., Eda, Goki, Leem, Dong-Seok, de Mello, John C., Bradley, Donal D. C., Chhowalla, Manish, Anthopoulos, Thomas D.

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Solution-processable infrared photodetectors: Materials, device physics, and applications by Li, Ning, Mahalingavelar, Paramasivam, Vella, Jarrett H., Leem, Dong-Seok, Azoulay, Jason D., Ng, Tse Nga

“…This review is written to introduce infrared photon detectors based on solution-processable semiconductors. A new generation of solution-processable photon…”
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Rapid Patterning of Single-Wall Carbon Nanotubes by Interlayer Lithography by Leem, Dong-Seok, Kim, Sungsoo, Kim, Ji Whan, Sohn, Jung Inn, Edwards, Angharad, Huang, Jingsong, Wang, Xuhua, Kim, Jang-Joo, Bradley, Donal D. C., deMello, John C.

“…High resolution patterning of single‐wall carbon nanotubes is achieved using interlayer lithography. Minimum feature sizes of 6 and 0.7 μm are demonstrated on…”
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Amount of retained austenite at room temperature after reverse transformation of martensite to austenite in an Fe–13%Cr–7%Ni–3%Si martensitic stainless steel by Leem, Dong-Seok, Lee, Yong-Deuk, Jun, Joong-Hwan, Choi, Chong-Sool

“…Below a heating rate of 10°C/s, the reverse transformation (α ′→γ) of a low carbon Fe–13%Cr–7%Ni–3%Si martensitic stainless steel occurs by diffusion, whereas…”
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Formation of low resistance and transparent ohmic contacts to p -type GaN using Ni–Mg solid solution by Song, June-O, Leem, Dong-Seok, Seong, Tae-Yeon

“…We report on the formation of Ni–Mg solid solution/Au ohmic contacts on p-GaN (5×1017 cm−3). The as-deposited Ni–Mg solid solution (8 nm)/Au (8 nm) contact…”
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Contribution of Sub-Gap States to Broadband Infrared Response in Organic Bulk Heterojunctions by Li, Ning, Park, Insun, Vella, Jarrett H., Oh, Soong Ju, Azoulay, Jason D., Leem, Dong-Seok, Ng, Tse Nga

“…This work studied a series of infrared detectors comprised of organic bulk heterojunctions to explain the origin of their broadband spectral response from the…”
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Low-resistance and highly-reflective Zn–Ni solid solution/Ag ohmic contacts for flip-chip light-emitting diodes by Song, June-O, Leem, Dong-Seok, Kwak, J. S., Nam, O. H., Park, Y., Seong, Tae-Yeon

“…We have investigated a Zn–Ni solid solution/Ag scheme for use in producing high-quality ohmic contacts for flip-chip light-emitting diodes (LEDs). The…”
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Green-Light-Selective Organic Photodiodes with High Detectivity for CMOS Color Image Sensors by Lim, Younhee, Yun, Sungyoung, Minami, Daiki, Choi, Taejin, Choi, Hyesung, Shin, Jisoo, Heo, Chul-Joon, Leem, Dong-Seok, Yagi, Tadao, Park, Kyung-Bae, Kim, Sunghan

“…Stacked structures employing wavelength-selective organic photodiodes (OPDs) have been studied as promising alternatives to the conventional Si-based image…”
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Low resistance and reflective Mg-doped indium oxide-Ag ohmic contacts for flip-chip light-emitting diodes by Song, J.-O., Dong-Seok Leem, Kwak, J.S., Nam, O.H., Park, Y., Tae-Yeon Seong

“…We have investigated an Mg-doped In/sub x/O/sub y/(MIO)-Ag scheme for the formation of high-quality ohmic contacts to p-type GaN for flip-chip light-emitting…”
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