K
Kejia Wang
Researcher at IBM
Publications - 21
Citations - 2065
Kejia Wang is an academic researcher from IBM. The author has contributed to research in topics: Layer (electronics) & Kesterite. The author has an hindex of 8, co-authored 15 publications receiving 1930 citations.
Papers
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Journal ArticleDOI
The path towards a high-performance solution-processed kesterite solar cell ☆
TL;DR: In this article, the development of kesterite-based Cu 2 ZnSn(S,Se) 4 (CZTSSe) thin-film solar cells, in which the indium and gallium from CIGSSe are replaced by the readily available elements zinc and tin, is reviewed.
Journal ArticleDOI
Thermally evaporated Cu2ZnSnS4 solar cells
Kejia Wang,Oki Gunawan,Teodor K. Todorov,Byungha Shin,S. J. Chey,Nestor A. Bojarczuk,David B. Mitzi,S. Guha +7 more
TL;DR: In this paper, high efficiency solar cells with up to 6.8% efficiency were obtained with absorber layer thicknesses less than 1μm and annealing times in the minutes.
Journal ArticleDOI
Structural and elemental characterization of high efficiency Cu2ZnSnS4 solar cells
TL;DR: In this article, the authors carried out detailed microstructural studies of phase separation and grain boundary composition in Cu2ZnSnS4-based solar cells and found that inter-reactions between the bottom molybdenum and the Cu 2ZnS4, besides triggering the formation of interfacial MoSx, results in the out-diffusion of Cu from the Cu2znSNS4 layer.
Patent
Nano/Microwire Solar Cell Fabricated by Nano/Microsphere Lithography
TL;DR: In this paper, a method for fabricating a solar cell is described, which includes the following steps: a monolayer of spheres is deposited onto the substrate. The spheres include nanospheres, microspheres or a combination thereof. The trimmed spheres are used as a mask to pattern wires in the substrate, and a doped emitter layer is formed on the patterned wires.
Patent
Fabrication of CuZnSn(S,Se) Thin Film Solar Cell with Valve Controlled S and Se
TL;DR: In this paper, a molybdenum (Mo)-coated substrate is used to fabricate thin film solar cells and a transparent conductive electrode is formed on the buffer layer.