• Title/Summary/Keyword: DSSC(Dye Sensitized Solar Cell)

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Effect of Dispersion Control of Multi-walled Carbon Nanotube in High Filler Content Nano-composite Paste for the Fabrication of Counter Electrode in Dye-sensitized Solar Cell (다중벽 탄소 나노튜브 기반 고충전 나노복합 페이스트를 이용한 염료 감응 태양 전지용 상대 전극의 제조에 있어서 분산 제어의 효과)

  • Park, So Hyun;Hong, Sung Chul
    • Polymer(Korea)
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    • v.37 no.4
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    • pp.470-477
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    • 2013
  • Multi-walled carbon nanotube (MWCNT) based nano-composite pastes having a high filler content are prepared for the facile fabrication of a counter electrode (CE) of dye-sensitized solar cell (DSSC). A polystyrene-based functional block copolymer is prepared through a controlled "living" radical polymerization technique, affording a surface modifier for the dispersion control of MWCNT in the paste. Physical dispersion through a ball-milling method additionally confirms the importance of the dispersion control, providing DSSC with enhanced processibility and improved solar-to-electricity energy conversion efficiency (${\eta}$) values. The performances of the DSSCs are further improved through the incorporation of minor amount of platinum (Pt) nanoparticles into the MWCNT pastes. The DSSC with the Pt/MWCNT hybrid CE exhibits very high ${\eta}$ values, which is superior to that of DSSC with the standard Pt CE.

Enhancement of Photoelectric Efficiency in a Dye-sensitized Solar Cell Using Hollow TiO2 Nanoparticles as an Overlayer

  • Lee, Kyoung-No;Kim, Woo-Byoung;Lee, Caroline Sunyong;Lee, Jai-Sung
    • Bulletin of the Korean Chemical Society
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    • v.34 no.6
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    • pp.1853-1856
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    • 2013
  • $TiO_2$ hollow nanoparticles (HNPs) and their light scattering effect which influences on the photoelectric conversion efficiency of a dye-sensitized solar cell (DSSC) were investigated. When only HNPs were employed in DSSC as the anode layer material, the conversion efficiency (e.g., 0.96%) was the lowest, possibly due to scattering loss of incident light. However, DSSC fabricated by using HNPs as a scattering overlayer on the $TiO_2$ nanoparticles (P-25), showed higher conversion efficiency (4.02%) than that without using HNPs (3.36%).

Characteristics of dye-sensitized solar cell on different $TiO_2$ sintering conditions ($TiO_2$ 소성 조건 변화에 따른 염료감응형 태양전지의 특성 연구)

  • Son, Min-Kyu;Seo, Hyun-Woong;Lee, Kyoung-Jun;Hong, Ji-Tae;Kim, Jung-Hoon;Kim, Hee-Je
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.1256-1257
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    • 2008
  • Dye-Sensitized Solar Cell(DSSC) is a new type of solar cell by using photocatalytic properties of $TiO_2$. The size and shape of $TiO_2$ particle are two of important parameters that are related to the characteristics of DSSC. And these can be changed by controlling $TiO_2$ sintering conditions especially temperature. The particles of $TiO_2$ are classified anatase and rutile. Anatase particles are created at low sintering temperature and rutile particles are created at high sintering temperature. Anatase particles have advantages such as increased surfaces that cause more attached dye molecules, and fast electron transportation. And rutile particles have advatages such as more efficient light scattering. Therefore, we studied characteristics of DSSC in this paper as $TiO_2$ sintering temperature is varied. As a result, we found that characteristics of DSSC are very good in the case that anatase and rutile particles are together and this sintering temperature is 450$^{\circ}C$.

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Photovoltaic Performance of Dye-sensitized Solar Cells assembled with Hybrid Composite Membrane based on Polypropylene Non-woven Matrix

  • Choi, Yeon-Jeong;Kim, Dong-Won
    • Bulletin of the Korean Chemical Society
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    • v.32 no.2
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    • pp.605-608
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    • 2011
  • Hybrid composite membranes were prepared by coating poly(ethylene oxide) and $SiO_2$ particles onto the porous polypropylene nonwoven matrix. Gel polymer electrolytes prepared by soaking the hybrid composite membranes in an organic electrolyte solution exhibited ionic conductivities higher than $1.1{\times}10^{-3}Scm^{-1}$ at room temperature. Dyesensitized solar cell (DSSC) employing the hybrid composite membrane with PEO and 10 wt % $SiO_2$ exhibited an open circuit voltage of 0.77 V and a short circuit current of 10.78 $mAcm^{-2}$ at an incident light intensity of 100 $mWcm^{-2}$, yielding a conversion efficiency of 5.2%. DSSC employing the hybrid composite membrane showed more stable photovoltaic performance than that of the DSSC assembled with liquid electrolyte.

A Study on the Characteristics of TiO2-Nb2O5 Semiconductor Oxides Using Dye-Sensitized Solar Cell (TiO2-Nb2O5 반도체 산화물을 이용한 염료 감응 태양전지 특성개선연구)

  • Kim, Haemaro;Lee, Don-Kyu
    • Journal of IKEEE
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    • v.23 no.2
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    • pp.538-542
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    • 2019
  • Semiconductor oxides such as $TiO_2$ involved in light conversion efficiency are the main elements of dye-sensitized solar cells (DSSC) and are used to mix different semiconductor oxides to improve efficiency. In this research, characteristics of the dye-sensitive solar cell are studied using semiconductor oxide formed by mixing $TiO_2$ and $Nb_2O_5$. A solar cell is manufactured by adding $Nb_2O_5$ at different ratios in order to analyze electrical characteristics of a mixed semiconductor oxide on light conversion efficiency. With the addition of $Nb_2O_5$, the conductivity was further enhanced than the recombination phenomenon caused by contact with electrolytes, confirming the improve of short-circuit, open voltage, and conversion efficiency of solar cells.

Preparation of spray-coated $TiO_2$ electrodes and I-V characteristics for Dye-sensitized Solar Cells

  • Lee, Won-Jae;Koo, Bo-Kun;Kim, Hyun-Joo;Lee, Dong-Yun;Song, Jae-Sung
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2004.11a
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    • pp.687-690
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    • 2004
  • Fabrication and characterization of dye-sensitized TiO2 solar cells(DSSC) consisting of spray-coated TiO2 electrode, an electrolyte containing I-/I3- redox couple, and a Pt-coated counter electrode carried out, using mainly FE-SEM and solar simulator. Also, effect of rapid thermal annealing(RTA) temperatue on I-V curves of DSSCS consisting of approximately 10m thickness and $5{\times}5mm2$ active area. No significant difference in the apparent size of TiO2 clusters was observed with increasing RTA temperature. Also, an open circuit voltage(Voc) of approximately 0.70V and a short-circuit photocurrent(Jsc) of 8 to 12mA/cm2 were observed in the TiO2 solar cell. With increasing RTA temperature upto 550oC, photocurrent density of dye-sensitized solar cells was enhanced, leading to enhancing the efficiency of dye-sensitized solar cells having Pt-electroplated counter electrode.

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Novel Application of Platinum Ink for Counter Electrode Preparation in Dye Sensitized Solar Cells

  • Kim, Sang Hern;Park, Chang Woo
    • Bulletin of the Korean Chemical Society
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    • v.34 no.3
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    • pp.831-836
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    • 2013
  • Platinized counter electrode is common in most of the dye sensitized solar cell (DSSC) researches because of its high catalytic activity and corrosion stability against iodine in the electrolyte. Platinum (Pt) film coating on fluorine doped tin oxide (FTO) glass surface by using alcoholic solution of hexachloroplatinic acid ($H_2PtCl_6$), paste containing Pt precursors or sputtering are widely used techniques. This paper presents a novel application of Pt ink containing nanoparticles for making platinized counter electrode for DSSC. The characteristics of Pt films coated on FTO glass surface by different chemical methods were compared along with the performance parameters of the DSSCs made by using the films as counter electrodes. The samples coated with Pt inks were sintered at $300^{\circ}C$ for 30 minutes whereas Pt-film and Pt-paste were sintered at $400^{\circ}C$ for 30 minutes. The Pt ink diluted in n-hexane was found to a promising candidate for the preparation of platinized counter electrode. The ink may also be applicable for DSSC on flexible substrates after optimization its sintering temperature.

Dye-sensitized Solar Cells with Mesoporous TiO2 Film Manufactured by Spin Coating Methode (스핀코팅법에 의해 제조되어진 나노다공질 TiO2 전극막을 이용한 염료감응형 태양전지)

  • 구보근;이동윤;이원재;김현주;송재성
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.17 no.9
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    • pp.1001-1005
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    • 2004
  • Rye-sensitized solar cell (DSSC) is a new class of solar cell, which consists of nanoporous TiO$_2$ electrode, dye-sensitizer, electrolyte, and counter electrode. Such cell is operated in sunlight via the principle of photosynthetic electrochemistry. In order to obtain the good dispersion of nano size TiO$_2$ particles In slurry, the pH of solvent, the sort and quantify of solvent additive and the quantity of surfactant were adjusted. As results, the lower the pH of solvent was the lower the viscosity of the slurry became. The addition of ethylene glycol and propylene glycol to dilute HNO$_3$ brought about the lowering of viscosity and the enhancement of stability in slurry. The addition of surfactant lowered the viscosity of slurry. It was possible to obtain the homogeneous and uniformly dispersed mesoporous TiO$_2$ film using the dilute HNO$_3$ solvent of pH 2 with the addition of ethylene glycol and neutral surfactant. DSSC was assembled with TiO$_2$ electrode and Pt electrode, and its photoelectric property was measured using the monochromatic wavelength in the rangee of 350∼700 nm.

Electrochemical properties of Graphene based $TiO_2$ photoelectrode for dye-sensitized solar cells (염료감응형 태양전지용 $TiO_2$ 광전극에 Graphene을 이용한 전기화학적 특성)

  • Wang, Jiao;Zhao, Xing Guan;Jin, En Mei;Park, Kyung-Hee;Gu, Hal-Bon;Park, Bo-Kee
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2009.11a
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    • pp.134-134
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    • 2009
  • We studied electrochemical properties of $TiO_2$ photoelectrode based graphene for dye-sensitized solar cells(DSSC). Gaphene has good electric conductivity and it is very good transparent when this is coated on monolayer. we prepared photoelectrode by squeeze methode and researched photoelectrical properties of $TiO_2$ electrode base gaphene. DSSC based on graphene was obtained conversion efficiency of 5.4% under irradiation of AM 1.5(100 $mWcm^2$).

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Application of electron beam irradiation for studying the degradation of dye sensitized solar cells (전자선 조사를 통한 염료감응형 태양전지의 분해 연구)

  • Akhtar, M.Shaheer;Lee, Hyun-Cheol;Min, Chun-Ji;Khan, M.A.;Kim, Ki-Ju;Yang, O-Bong
    • 한국신재생에너지학회:학술대회논문집
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    • 2006.06a
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    • pp.179-182
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    • 2006
  • The effect of electron beam irradiation on dye sensitized solar cell (DSSC) has been studied to examine degradation of DSSC. The high-energy electron beam irradiation affects on the materials and performance of dye sensitized solar cells. We have checked the effects of electron beam irradiation of $TiO_2$ substrate with and without dye adsorption on the photovoltaic performances of resulting DSSCS and also studied the structural and electrical properties of polymers after irradiation. All solar cells materials were irradiated by electron beams with an energy source of 2MeV at different dose rates of 60 kGy, 120 kGy 240 kGy and 900 kGy and then their photoelectrical parameters were measured at 1 sun $(100 mW/cm^2)$. It was shown that the efficiency of DSSC was decreased as increasing the dose of e-beam irradiation due to lowering in $TiO_2$ crystallinity, decomposition of dye and oxidation of FTO glasses. On the other hand, the performance of solid-state DSSC with polyethylene oxide based electrolyte was improved after irradiation of e-beam due to enhancement of its conductivity and breakage of crosslinking.

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