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Article
Publication date: 1 January 2014

Banu Poobalan, Jeong Hyun Moon, Sang-Cheol Kim, Sung-Jae Joo, Wook Bahng, In Ho Kang, Nam-Kyun Kim and Kuan Yew Cheong

The high density of defects mainly attributed to the presence of silicon oxycarbides, residual C clusters, Si- and C-dangling bonds at or near the SiO2/SiC interface degrades the…

Abstract

Purpose

The high density of defects mainly attributed to the presence of silicon oxycarbides, residual C clusters, Si- and C-dangling bonds at or near the SiO2/SiC interface degrades the performance of metal-oxide-semiconductor (MOS) devices. In the effort of further improving the quality and enhancement of the SiC oxides thickness, post-oxidation annealed by a combination of nitric acid (HNO3) and water (H2O) vapor technique on thermally grown wet-oxides is introduced in this work. The paper aims to discuss these issues.

Design/methodology/approach

A new technique of post-oxidation annealing (POA) on wet-oxidized n-type 4H-SiC in a combination of HNO3 and H2O vapor at various heating temperatures (70°C, 90°C and 110°C) of HNO3 solution has been introduced in this work.

Findings

It has been revealed that the samples annealed in HNO3 + H2O vapour ambient by various heating temperatures of HNO3 solution; particularly at 110°C is able to produce oxide with lower interface-state density and higher breakdown voltage as compared to wet-oxidized sample annealed in N2 ambient. The substrate properties upon oxide removal show surface roughness reduces as the heating temperature of HNO3 solution increases, which is mainly attributed due to the significant reduction of carbon content at the SiC/SiO2 interface by C=N passivation and CO or CO2 out-diffusion.

Originality/value

Despite being as a strong oxidizing agent, vaporized HNO3 can also be utilized as nitridation and hydrogen passivation agent in high temperature thermal oxidation ambient and these advantages were demonstrated in 4H-SiC.

Details

Microelectronics International, vol. 31 no. 1
Type: Research Article
ISSN: 1356-5362

Keywords

Article
Publication date: 1 February 2004

Kiyoung Kim

This paper, in face of the increasing interconnectivity between local and global, has attempted to retrospect the critical moment of Korean society under Tae‐woo Rho (1988–93…

Abstract

This paper, in face of the increasing interconnectivity between local and global, has attempted to retrospect the critical moment of Korean society under Tae‐woo Rho (1988–93) regime, in which Korea struggled for fundamental reforms of the earlier centrally controlled state system through economic rationalization and labor flexibilization. During that juncture of Korean history, neo‐liberalization under the influence of Fordian decline was a governing theme behind the Korean economy's policy formation as well as labor agenda. This reliance of government on the neo‐liberal pillar has made an impact on the subsequent leaderships under Young Sam Kim (1993–1998) and Dae Jung Kim (1998‐present). After briefly reviewing the major aspect of Korean economy and labor problems surrounding the financial crisis of East Asia around 1998, the international influence of Fordian decline and neo‐liberalization as a Korean alternative has been discussed.

Details

International Journal of Development Issues, vol. 3 no. 2
Type: Research Article
ISSN: 1446-8956

Article
Publication date: 9 May 2013

Seung‐Bae Park, Namho Chung and Sang‐Cheol Woo

The purpose of this study is to propose long‐term orientation as a moderating effect on restaurant customer reward programs. Unlike in short‐term oriented and transactional…

5887

Abstract

Purpose

The purpose of this study is to propose long‐term orientation as a moderating effect on restaurant customer reward programs. Unlike in short‐term oriented and transactional marketing, long‐term orientation is an important factor in creating new loyal customers.

Design/methodology/approach

This research shows how the moderating effect of long‐term orientation affects customer reaction to reward timing (Experiment 1) and reward type (Experiment 2). The independent variables of Experiment 1 were timing of rewards (immediate/accumulate) and long‐term orientation (high/low), with the dependent variable being customer loyalty. The independent variables of Experiment 2 were the types of rewards (monetary/nonmonetary) and long‐term orientation (high/low), with the dependent variable being customer loyalty. The treatment groups are different from each other with regard to reward type and reward timing.

Findings

Depending on the reward type and its timing, long‐term orientation has a moderating effect on customer loyalty. In customers with a high long‐term orientation, there is no difference in the effect of rewards, whether they are immediate or accumulated and monetary or nonmonetary. On the other hand, for customers with a low long‐term orientation, the effect of rewards increases for monetary rewards more than nonmonetary ones and for immediate rewards more than for accumulated ones.

Originality/value

This paper helps restaurant managers to better understand customer loyalty and the value of reward programs that take into account the long‐term orientation concept.

Details

Managing Service Quality: An International Journal, vol. 23 no. 3
Type: Research Article
ISSN: 0960-4529

Keywords

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