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새로운 전극 설계법을 이용한 인체 감지형 초전형 적외선 센서 시스템
권성열 한국융합신호처리학회 2002 융합신호처리학회 논문지 (JISPS) Vol.3 No.4
인체감지용 초전형 적외선 센서 시스템은 최소 2개 이상의 센서를 사용한다. 상부전극과 바닥전극의 디자인을 새로이 하여 센서 2개가 인체감지를 가능하게 하는 센서 시스템을 센서 1개로 구성한 변환기를 설계하였다. 초전성 효과를 나타내는 재료로는 P(VDF/TrFE) 필름을 이용하였다 제작된 적외선 센서는 기존의 2개 이상의 센서를 사용하던 시스템에 비해 거의 같은 결과인 적외선원 13 $\times$ 10$10^-6$ 에 대하여 9.62 $\times$ 10$10^5$ V/W 의 높은 전압감도를 나타내었으며 NEP (noise equivalent power) 는 3.95 $\times$ $10^-7$/ W, 그리고 specific detectivity D$^*$는 5.06 $\times$ $10^5$ cm/W나타내었다. For human detecting pyroelectric infrared sensor system using more than 2 sensor devices. By new top and bottom electrode design, 1 sensor can sensing human instead of using 2 sensor system. The poled P(VDF/TrFE) film used for sensor pyroelectric materials. The fabricated sensors NEP (noise equivalent power) and specific detectivity D$^*$ of the device were 9.62 $\times$ 10$10^5$ V/W, 3.95 $\times$ 10$10^-175$ W and 5.06 $\times$ 10$10^5$W under emission energy of 13 ${\mu}W/cm^2$ respectively and It's result is almost same result that using more than 2 sensor system for human detecting.
Pt 상대전극 성막 두께와 두 기판 간격에 따른 DSSC의 효율 특성
권성열,양욱,주택원,Kwon, Sung-Yeol,Yang, Wook,Zhou, Zeyuan 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.3
DSSCs electrical characteristics and efficiency fabricated with different tape casting thickness Pt counter electrodes and different thickness between $TiO_2$ photo electrode and Pt counter electrode substrate were studied. 1 layer Pt counter electrode shows 3.979% efficiency. Efficiency increased as tape casting thickness decreased. The lowest open-circuit voltage was a 0.726 V and the highest short-circuit current was a 2.188 mA on 1 layer Pt counter electrode. On the different thickness between two substrates, the lowest open-circuit voltage 0.712 V and the highest short-circuit current 2.787 mA was measured at $60{\mu}m$ surlyn film thickness and it shows the highest value of 5.067% efficiency.
TTIP가 첨가된 저온소성용 TiO<sub>2</sub> Paste를 이용한 DSSC의 효율 특성
권성열,심창수,양욱,Kwon, Sung Yeol,Sim, Chang Soo,Yang, Wook 한국전기전자재료학회 2019 전기전자재료학회논문지 Vol.32 No.1
Recently, the application field of solar panels is increasing. Accordingly, the demand for flexible devices is also steadily increasing. It is therefore necessary to develop $TiO_2$ paste for low-temperature annealing for flexible DSSC fabrication. In this study, the $TiO_2$ paste for low-temperature annealing with varying molar ratio of titanium isopropoxide (TTIP) was prepared, and DSSC was fabricated and its characteristics were compared. As a result, there was no deformation of the particles on the surface in the SEM data. However, the highest open circuit voltage, short circuit current, and fill factor were measured in the DSSC unit cell prepared by adding 0.5 mol of TTIP to the $TiO_2$ paste, and the highest efficiency was 4.148%.
Fabrication and Characteristics of Pyroelectric IR Sensor Using $1.6{\mu}m$ P(VDF/TrFE) thin film
권성열,Kwon, Sung-Yeol The Korean Sensors Society 2001 센서학회지 Vol.10 No.2
A pyroelectric senior using P(VDF/TrFE) film for sensing materials has been fabricated and evaluated with other commercial pyroelectric sensors that use ceramic materials for sensing. The device was mounted in a TO-5 housing to detect infrared light of $5.5{\sim}14\;{\mu}m$ wavelength. The NEP (noise equivalent power) and specific detectivity $D^*$ of the device were $2.13{\times}10^{-8}\;W$ and $9.37{\times}10^6\;cm/w$ respectively under emission energy of $13\;{\mu}W/cm^2$ respectively. These result shows a better characteristics than other commercial pyroelectric sensors NEP $8.08{\times}10^{-7}\;W$ and $D^*$ $2.47{\times}10^5\;cm/w$.
P (VDF/TrFE) 박막 적외선 센서의 제작 및 특성
권성열 경북대학교 전자기술연구소 2001 電子技術硏究誌 Vol.22 No.2
Pyroelectric sensor that using P(VDF/TrFE) film for sensing materials have been fabricated and evaluated with other commercial pyroelectric sensor that using ceramic materials for sensing. The device was mounted in TO-5 housing with infrared filter to detect infrared light of 5.5 ∼ 14 ㎛ wavelength. The NEP(noise equivalent power) and specific detectivity D^* of the device were 2.13 X 10 ^(-8) W and 9.37 × 10^6 ㎝/W under emission energy of 13 μW/㎠ respectively
TiO<sub>2</sub> Paste에 PEG 첨가에 따른 DSSC의 효율 특성
권성열,양욱,장자항,Kwon, Sung-Yeol,Yang, Wook,Zhang, Zi-Heng 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.11
Photo electrode is an important component of DSSC, so this paper did some research on it. Through the method of adding PEG additive into $TiO_2$ paste, the electrical characteristics and efficiencies of DSSCs with photo electrode surface area were studied. In the case of not adding PEG in $TiO_2$ paste, $26{\mu}m$ thickness $TiO_2$ photo electrode shows 5.081% efficiency. The highest short circuit current density was $10.476mA/cm2^$. The structure of porous $TiO_2$ film can be controlled through changing the PEG additive amount in $TiO_2$ paste and the molecular weight of PEG. When the additive amount of PEG 20,000 in $TiO_2$ paste reaches 5%, the peak efficiency with $26{\mu}m$ thickness $TiO_2$ photo electrode was 5.387% and its highest current density were $11.084mA/cm^2$.
TiO2 Paste에 PEG 첨가에 따른 DSSC의 효율 특성
권성열,양 욱,장자항 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.11
Photo electrode is an important component of DSSC, so this paper did some research on it. Through the method of adding PEG additive into TiO2 paste, the electrical characteristics and efficienciesof DSSCs with photo electrode surface area were studied. In the case of not adding PEG in TiO2 paste,26 ㎛ thickness TiO2 photo electrode shows 5.081% efficiency. The highest short circuit current densitywas 10.476 mA/cm2. The structure of porous TiO2 film can be controlled through changing the PEGadditive amount in TiO2 paste and the molecular weight of PEG. When the additive amount of PEG20,000 in TiO2 paste reaches 5%, the peak efficiency with 26 ㎛ thickness TiO2 photo electrode was5.387% and its highest current density were 11.084 mA/cm2. 본 실험에서는 PEG의 분자량과 첨가량을 각각 달리하여 제조된 TiO2 paste로 제작된 DSSC의 전기적 특성 및 효율을 측정하고 비교하였다. TiO2 paste 제조 시 PEG 분자량에 따라 첨가량을 5%에서 20%까지 변화시켰을 때, 각 분자량에서 동일하게 첨가량 5%로 제작된 DSSC의 효율이 가장 높게 측정되었다. 또한, 첨가량 5% 시 첨가된 PEG 분자량이 1,000에서 20,000까지 증가함에 따라 효율이 증가됨을 확인하였다. 결과 TiO2 paste에 PEG 20000을 5% 첨가하여 제작된 TiO2 광전극 두께 26 ㎛에서 가장 높은 효율 5.387%을 나타내었다.
권성열,Kwon, Sung-Yeol Materials Research Society of Korea 2007 한국재료학회지 Vol.17 No.4
[ 0-3PbTiO_3/P$ ](VDF/TrFE) nanocomposites thin films for passive pyroelectric infrared sensor have been fabricated by two-step spin coating technique. 65 wt% VDF and 35 wt% TrFE was formed to a P(VDF/TrFE) poder Nano size $PbTiO_3$ powder was used. 0-3 connectivity of $PbTiO_3$(VDF/TrFE) composites film is achieved and also observed by SEM photography successfully. The dielectric constant, and pyroelectric coefficient measured and compared with P (VDF/TrFE). A very low dielectric constant (13.48 at 1 kHz) and high enough pyroelectric coefficient (3.101 $nC/cm^2$.k at $50^{circ}C$) neasured. This nanocomposites can be used for a new pyroelectric infrared sensor for better performance.