Taiwan Semiconductor Manufacturing Comp. Ltd.

Industrial Technology Research Institute

National Taiwan University

Wen-Chin Chen

Yu-Hung Cheng

Chin-Szu Lee

Cheng-Yi Wu

Hsiang Sheng Liu

Ren-Hua Guo

Shih-Chieh Liao

Yu-Ting Chen

Nae-Lih Wu

Hung-Chun Wu

Yih-Chyng Wu

A method includes providing a semiconductor structure having an active region and an isolation structure adjacent to the active region, the active region having source and drain regions sandwiching a channel region for a transistor, the semiconductor structure further having a gate structure over the channel region. The method further includes etching a trench in one of the source and drain regions, wherein the trench exposes a portion of a sidewall of the isolation structure, epitaxially growing a first semiconductor layer in the trench, epitaxially growing a second semiconductor layer over the first semiconductor layer, changing a crystalline facet orientation of a portion of a top surface of the second semiconductor layer by an etching process, and epitaxially growing a third semiconductor layer over the second semiconductor layer after the changing of the crystalline facet orientation.

Semiconductor epitaxy bordering isolation structure

A Ni&#x2014;Mn composite oxalate powder is provided. The Ni&#x2014;Mn composite oxalate powder includes a plurality of biwedge octahedron particles represented by the general formula: NiMnCoMCO.nHO, wherein q+x+y+z=1, 0&#x3c;q, x&#x3c;1, 0&#x2266;y&#x3c;1, 0&#x2266;z&#x3c;0.15, 0&#x2266;n&#x2266;5, and M is at least one of Mg, Sr, Ba, Cd, Zn, Al, Ga, B, Zr, Ti, Ca, Ce, Y, Nb, Cr, Fe and V. The above powder may be further calcined with a lithium salt to form a lithium transition metal oxide powder for use as a positive electrode material in lithium ion-batteries.

Ni&#x2014;Mn composite oxalate powder, lithium transition metal composite oxide powder and lithium ion secondary battery

The disclosure provides a Ni&#x2014;Mn composite oxalate powder, including a plurality of biwedge octahedron particles represented by the general formula: NiMnCoMCO.nHO, wherein q+x+y+z=1, 0&#x3c;q, x&#x3c;1, 0&#x2266;y&#x3c;1, 0&#x2266;z&#x3c;0.15, 0&#x2266;n&#x2266;5, and M is at least one of Mg, Sr, Ba, Cd, Zn, Al, Ga, B, Zr, Ti, Ca, Ce, Y, Nb, Cr, Fe and V. The above powder may be further calcined with a lithium salt to form a lithium transition metal oxide powder for use as a positive electrode material in lithium ion-batteries.

Growing community of inventors

Kaohsiung, Taiwan

Wen-Chin Chen