K
Kumar Mallem
Researcher at Sungkyunkwan University
Publications - 22
Citations - 205
Kumar Mallem is an academic researcher from Sungkyunkwan University. The author has contributed to research in topics: Amorphous silicon & Solar cell. The author has an hindex of 7, co-authored 19 publications receiving 121 citations. Previous affiliations of Kumar Mallem include Hong Kong University of Science and Technology.
Papers
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Journal ArticleDOI
Molybdenum oxide: A superior hole extraction layer for replacing p-type hydrogenated amorphous silicon with high efficiency heterojunction Si solar cells
Kumar Mallem,Yongjun Kim,Shahzada Qamar Hussain,Subhajit Dutta,Anh Huy Tuan Le,Minkyu Ju,Jinjoo Park,Young Hyun Cho,Youngkuk Kim,Eun-Chel Cho,Junsin Yi +10 more
TL;DR: In this paper, transition metal oxides (TMO) are applied as a surface passivation and carrier-selective contact layer through replacing boron/phosphorus doped emitter layers in silicon heterojunction (SHJ) solar cell applications.
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Influence of small size pyramid texturing on contact shading loss and performance analysis of Ag-screen printed mono crystalline silicon solar cells
Minkyu Ju,Kumar Mallem,Subhajit Dutta,Nagarajan Balaji,Donghyun Oh,Eun-Chel Cho,Young Hyun Cho,Youngkuk Kim,Junsin Yi +8 more
TL;DR: In this article, the influence of pyramids size on the contact shading loss mechanism of silver screen-printed p-type c-Si solar cells was investigated, and three alkaline texture solutions with sodium silicate additives were optimized to develop the small pyramid (0.5-2.0), middle pyramid (5.0-9.0) and large pyramid (10-15
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Quantum-Rod On-Chip LEDs for Display Backlights with Efficacy of 149 lm W-1 : A Step toward 200 lm W-1.
Chengbin Kang,Maksym F. Prodanov,Yiyang Gao,Kumar Mallem,Zhengnan Yuan,Valerii V. Vashchenko,Abhishek Kumar Srivastava +6 more
TL;DR: In this article, a gradient alloyed CdSe/Znx Cd1-x S/SnS and Cd Se/CdS/ZnsS core/shell/shell QR downconverters with high efficacy LEDs covering a wide color gamut are reported.
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Using the light scattering properties of multi-textured AZO films on inverted hemisphere textured glass surface morphologies to improve the efficiency of silicon thin film solar cells
Shahzada Qamar Hussain,Shahzada Qamar Hussain,Anh Huy Tuan Le,Kumar Mallem,Hyeongsik Park,Minkyu Ju,Yongjun Kim,Jaehyun Cho,Jinjoo Park,Youngkuk Kim,Junsin Yi +10 more
TL;DR: In this article, the light scattering characteristics of multi-textured aluminum-doped zinc oxide (AZO) thin films with high optical transmittance, haze ratio and step coverage for amorphous silicon thin film solar cells (a-Si TFSCs) were reported.
Journal ArticleDOI
Ambient annealing influence on surface passivation and stoichiometric analysis of molybdenum oxide layer for carrier selective contact solar cells
Shahzada Qamar Hussain,Shahzada Qamar Hussain,Kumar Mallem,Yongjun Kim,Anh Huy Tuan Le,Muhammad Quddamah Khokhar,Sehyeon Kim,Subhajit Dutta,Simpy Sanyal,Youngkuk Kim,Jinjoo Park,Youngseok Lee,Young Hyun Cho,Eun-Chel Cho,Junsin Yi +14 more
TL;DR: In this article, optical, passivation and stoichiometric properties of MoOx thin films were analyzed by varying thickness, temperature and ambient annealing, and the results indicated that MoOx is an important material to use in future CSC solar cell applications with the concept of new advantages such as dopant free, non-toxic and low temperature fabrication process.