Jongwan Jung, Baegmo Son, Byungmin Kam, Yong Sang Joh, Woonyoung Jeong, Seongjae Cho, Won-Jun Lee and Sangjoon Park

Materials

2021-07-03

The key process steps for growing high-quality Si-based epitaxial films via reduced pressure chemical vapor deposition (RPCVD) are investigated herein. The quality of the epitaxial films is largely affected by ...

Sajjad Hussaina, Hailiang Liu, Dhanasekaran Vikraman, Muhammad Hussain, Syed Hassan Abbas Jaffery, Asif Ali, Hyun-Seok Kim, Jungwon Kang, Jongwan Jung

Journal of Alloys and Compounds

2021-07-02

Transition metal carbide (Mo2C) and carbon nanotubes (CNTs) have been used to modify the hole transport layers (HTLs) in perovskite solar cells (PSCs) and photodetectors due to their high metallic conductivity, superior ...

Natalia Voronina, Najma Yaqoob, Hee Jae Kim, Kug-Seung Lee, Hee-Dae Lim, Hun-Gi Jung, Olivier Guillon, Payam Kaghazchi, and Seung-Taek Myung

Advanced Energy Materials

2021-05-19

Herein, stable cationic and anionic redox in an O3-type layered Na[Ni2/3Ru1/3]O2 cathode for sodium-ion batteries (SIBs) is revealed. Density functional theory (DFT) calculation shows that the electron density features c...

Hee Jae Kim, Jae Hyeon Jo, Ji Ung Choi, Natalia Voronina, DocheonAhn, Tae-Yeol Jeon, Hitoshi Yashiro, Yauhen Aniskevich, Genady Ragoisha, Eugene Streltsov, Seung-Taek Myung

Energy Storage Materials

2021-05-14

We, for the first time, report potassium storage in carbon-modified Li4Ti5O12 spinel (C-LTO), where the carbon coating increases the electrical conductivity from ~10−7 to ~10−1 S cm−1. C-LTO provides a ...

Hagyeong Kwon, Dongyeon Bae, Dongyeun Won, Heeju Kim, Gunn Kim, Jiung Cho, Hee Jung Park, Hionsuck Baik, Ah Reum Jeong, Chia-Hsien Lin, Ching-Yu Chiang, Ching-Shun Ku, Heejun Yang, and Suyeon Cho

ACS Nano

2021-03-30

Silver-based nanomaterials have been versatile building blocks of various photoassisted energy applications; however, they have demonstrated poor electrochemical catalytic performance and stability, in particular, in aci...

Jun Ho Yu, Chang-Heum Jo, HeeJae Kim, Seung-Taek Myung

Energy Storage Materials

2021-03-16

Chalcogenide materials are emerging as promising anode materials for sodium-ion batteries because of their reasonable capacity, which stems from two consecutive conversion and de/alloy reactions. Herein, we intro- duce t...

Sajjad Hussain, Kamran Akbar, Dhanasekaran Vikraman, Iqra Rabani, Wooseok Song, Ki-Seok An, Hyun-Seok Kim, Seung-Hyun Chun, Jongwan Jung

Journal of Materials Research & Technology

2021-03-03

Hydrogen is a highly efficient and clean renewable energy source and water splitting through electrocatalytic hydrogen evolution is a most promising approach for hydrogen generation. Layered transition metal di...

Natalia Voronina, Hee Jae Kim, Aishuak Konarov, Najma Yaqoob, Kug-Seung Lee, Payam Kaghazchi, Olivier Guillon, Seung-Taek Myung

Advanced Energy Materials

2021-02-22

In this work, the rational design of O′3-type Na[Ni2/3−xCoxSb1/3]O2, a solid solution of Na[Ni2/3Sb1/3]O2–Na[Co2/3Sb1/3]O2, is introduced. Because of the difficulty of the Co3+/2+ redox reaction, the el...

Muhammad Hussain, Syed Hassan Abbas Jafery, AsifAli, Cong Dinh Nguyen, Sikandar Aftab, Muhammad Riaz, Sohai lAbbas, Sajjad Hussain, Yongho Seo & Jongwan Jung

Scientific Reports

2021-02-11

Two-dimensional (2D) heterostructure with atomically sharp interface holds promise for future electronics and optoelectronics because of their multi-functionalities. Here we demonstrate gatetunable rectifying behavi...

Muhammad Hussain, Woonyoung Jeong, Il-Suk Kang, Kyeong-Keun Choi, Syed Hassan, Abbas Jaffery, Asif Ali, Tassawar Hussain, Muhammad Ayaz, Sajjad Hussain and Jongwan Jung

Sensors

2021-02-03

Herein, the fabrication of a novel highly sensitive and fast hydrogen (H2) gas sensor, based on the Ta2O5 Schottky diode, is described. First, Ta2O5 thin films are deposited on silicon carbide (SiC) and silicon (Si) subs...