Fabrication of Thin Film Using Nanosized Indium Tin Oxide (ITO) Powder and Its Degradation Characteristics

Kim, Yong Nam; Park, Jeong Hyun; Shin, Hyun Gyu; Song, Jun Kwang; Lee, Hee Soo

doi:10.4028/www.scientific.net/MSF.449-452.285

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HomeMaterials Science ForumDesigning, Processing and Properties of Advanced...Fabrication of Thin Film Using Nanosized Indium...

Fabrication of Thin Film Using Nanosized Indium Tin Oxide (ITO) Powder and Its Degradation Characteristics

Abstract:

Nanosized ITO powder was fabricated by homogeneous precipitation which used formamide as a precipitator. ITO thin film was deposited by RF magnetron sputtering using ITO target which was prepared by sintering of nanosized ITO powder. From the accelerated degradation test with stress factor of temperature, the lifetime estimate, degradation rate/degree, activation energy and etc. were calculated. It was showed that under thermal condition, the prominent failure mechanism of degradation was the decrease of oxygen vacancies due to oxidation of ITO thin film.

Info:

Periodical:

Materials Science Forum (Volumes 449-452)

Main Theme:

Designing, Processing and Properties of Advanced Engineering Materials

Edited by:

S.-G. Kang and T. Kobayashi

Pages:

285-288

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.449-452.285

Citation:

Y. N. Kim et al., "Fabrication of Thin Film Using Nanosized Indium Tin Oxide (ITO) Powder and Its Degradation Characteristics", Materials Science Forum, Vols. 449-452, pp. 285-288, 2004

Online since:

March 2004

Authors:

Yong Nam Kim, Jeong Hyun Park, Hyun Gyu Shin, Jun Kwang Song, Hee Soo Lee

Keywords:

Accelerated Degradation, Activation Energy, Lifetime, Nanosized ITO Powder, Oxygen Vacancy, Reaction Rate, Thin Film

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References

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Paper TitlePages

Thermal Degradation Kinetics of Polyurethane/polybenzoxazine Alloys

Authors: Sunan Tiptipakorn, Sarawut Rimdusit, Phiriyathorn Suwanmala, Kasinee Hemvichian

Abstract: Recently, the alloys of polyurethane (PU)/polybenzoxazine (PBA-a) have been studied due to many interesting properties; however, the thermal degradation kinetics of the system has not been mentioned before. In this study, the degradation temperatures of the obtained alloys were determined using Thermogravimetric Analyzer (TGA) with various heating rate of 10, 20, 25oC/min. The polyurethane /polybenzoxazine alloys at the weight ratios of 30/70 were prepared for determination due to its highest degradation temperature. The first derivative curves of the thermograms (DTG) were deconvoluted with Peak-fit program. The results reveal three main sub-stages of degradation. According to Arrhenius Eq., the activation energies (Ea) of each degradation sub-stage were determined using Kissinger model and Fynn-Wall Ozawa model.

439

Fabrication of Flexible and Semitransparent PTB7:PC₇₁BM Organic Solar Cells

Authors: Shunjiro Fujii

Abstract: Semitransparent bulk-heterojunction (BHJ) solar cells have attracted a strong attention due to the possible use in new photovoltaic applications. However, semitransparent BHJ solar cells on flexible substrates have not yet been developed. In this work, flexible BHJ solar cells were fabricated on an ITO/PET substrate using an inverted PET/ITO/PFN/PTB7:PC₇₁BM/MoO₃/Au device structure. The power conversion efficiency (PCE) of the device was 3.4 %. Fabrication of semitransparent solar cells was further demonstrated utilizing a MoO₃/Au/MoO₃ transparent anode. The semitransparent solar cell showed bifacial energy generation when illuminated from both front and backside. The PCEs with illumination from the ITO or Au/MoO₃ side were 2.7 % and 2.1 %, respectively. These results showed that a semitransparent PTB7:PC₇₁BM solar cell was successfully fabricated on flexible PET substrates.

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