Alkoxyaminosilane compounds and applications thereof
View Patent ↗Alkoxyaminosilane compound having formula I, and processes and compositions for depositing a silicon-containing film, are described herein: (R 1 R 2 )NSiR 3 OR 4 OR 5 Formula (I) wherein R 1 is independently selected from a linear or branched C 1 to C 10 alkyl group; a C 2 to C 12 alkenyl group; a C 2 to C 12 alkynyl group; a C 4 to C 10 cyclic alkyl group; and a C 6 to C 10 aryl group; R 2 and R 3 are each independently selected from hydrogen; a linear or branched C 1 to C 10 alkyl group; a C 3 to C 12 alkenyl group, a C 3 to C 12 alkynyl group, a C 4 to C 10 cyclic alkyl group, and a C 6 to C 10 aryl group; and R 4 and R 5 are each independently selected from a linear or branched C 1 to C 10 alkyl group; a C 2 to C 12 alkenyl group; a C 2 to C 12 alkynyl group; a C 4 to C 10 cyclic alkyl group; and a C 6 to C 10 aryl group.
1. An alkoxyaminosilane for depositing a silicon-containing film selected from the group consisting of di-ethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, diethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, di-tert-butoxy(methylamino)methylsilane, di-tert-butoxy(ethylamino)methylsilane, ditert-butoxy(iso-propylamino)methylsilane, di-tert-butoxy(n-butylamino)methylsilane, di-tert-butoxy(sec-butylamino)methylsilane, di-tert-butoxy(iso-butylamino)methylsilane, di-tert-butoxy(tert-butylamino)methylsilane, di-tert-pentoxy(methylamino)methylsilane, di-tert-pentoxy(ethylamino)methylsilane, di-tert-pentoxy(iso-propylamino)methylsilane, di-tert-pentoxy(n-butylamino)methylsilane, di-tert-pentoxy(sec-butylamino)methylsilane, di-tert-pentoxy(iso-butylamino)methylsilane, di-tert-pentoxy(tert-butylamino)methylsilane, dimethoxy(phenylmethylamino)methylsilane, and diethoxy(phenylmethylamino)methylsilane.
2. A deposition process for depositing a silicon-containing film using at least one precursor comprising an alkoxyaminosilane selected from the group consisting of di-ethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, diethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, di-tert-butoxy(methylamino)methylsilane, di-tert-butoxy(ethylamino)methylsilane, ditert-butoxy(iso-propylamino)methylsilane, di-tert-butoxy(n-butylamino)methylsilane, di-tert-butoxy(sec-butylamino)methylsilane, di-tert-butoxy(iso-butylamino)methylsilane, di-tert-butoxy(tert-butylamino)methylsilane, di-tert-pentoxy(methylamino)methylsilane, di-tert-pentoxy(ethylamino)methylsilane, di-tert-pentoxy(iso-propylamino)methylsilane, di-tert-pentoxy(n-butylamino)methylsilane, di-tert-pentoxy(sec-butylamino)methylsilane, di-tert-pentoxy(iso-butylamino)methylsilane, di-tert-pentoxy(tert-butylamino)methylsilane, dimethoxy(phenylmethylamino)methylsilane, and diethoxy(phenylmethylamino)methylsilane.
3. The process of claim 2 , wherein the deposition process is selected from the group consisting of cyclic CVD (CCVD), MOCVD (Metal Organic CVD), thermal chemical vapor deposition, plasma enhanced chemical vapor deposition (PECVD), high density PECVD, photon assisted CVD, plasma-photon assisted (PPECVD), cryogenic chemical vapor deposition, chemical assisted vapor deposition, hot-filament chemical vapor deposition, CVD of a liquid polymer precursor, deposition from supercritical fluids, and low energy CVD (LECVD), and flowable chemical vapor deposition.
4. The process of claim 2 , wherein the deposition process further comprises a nitrogen source selected from the group consisting of ammonia, hydrazine, monoalkylhydrazine, dialkylhydrazine, nitrogen, nitrogen/hydrogen, ammonia plasma, nitrogen plasma, nitrogen/hydrogen plasma, and mixture thereof.
5. The process of claim 2 , wherein the deposition process further comprises an oxygen source selected from the group consisting of water (H 2 O) (e.g., deionized water, purifier water, and/or distilled water, a mixture containing water and other organic liquid), oxygen (O 2 ), oxygen plasma, ozone (O 3 ), NO, NO 2 , water plasma, carbon monoxide (CO), carbon dioxide (CO 2 ) and combinations thereof.
6. The process of claim 2 , wherein the deposition process is selected from the group consisting of atomic layer deposition (ALD), plasma enhanced ALD (PEALD), and plasma enhanced cyclic CVD (PECCVD) process.
7. The process of claim 2 , wherein the deposition process is flowable chemical vapor deposition (FCVD).
8. A vessel which is used to deliver a precursor for the deposition of a silicon-containing film, the vessel comprising the precursor selected from the group consisting of di-ethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, diethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, di-tert-butoxy(methylamino)methylsilane, di-tert-butoxy(ethylamino)methylsilane, ditert-butoxy(iso-propylamino)methylsilane, di-tert-butoxy(n-butylamino)methylsilane, di-tert-butoxy(sec-butylamino)methylsilane, di-tert-butoxy(iso-butylamino)methylsilane, di-tert-butoxy(tert-butylamino)methylsilane, di-tert-pentoxy(methylamino)methylsilane, di-tert-pentoxy(ethylamino)methylsilane, di-tert-pentoxy(iso-propylamino)methylsilane, di-tert-pentoxy(n-butylamino)methylsilane, di-tert-pentoxy(sec-butylamino)methylsilane, di-tert-pentoxy(iso-butylamino)methylsilane, di-tert-pentoxy(tert-butylamino)methylsilane, dimethoxy(phenylmethylamino)methylsilane, diethoxy(phenylmethylamino)methylsilane; and
wherein the purity of the precursor is about 98% or greater.
9. The vessel of claim 8 wherein the vessel is comprised of stainless steel.
10. A composition for the deposition of a dielectric film comprising:
an alkoxyaminosilane selected from the group consisting of di-ethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, diethoxy(tert-butylamino)methylsilane, diethoxy(tert-pentylamino)methylsilane, diethoxy(iso-propoxyamino)methylsilane, di-tert-butoxy(methylamino)methylsilane, di-tert-butoxy(ethylamino)methylsilane, ditert-butoxy(iso-propylamino)methylsilane, di-tert-butoxy(n-butylamino)methylsilane, di-tert-butoxy(sec-butylamino)methylsilane, di-tert-butoxy(iso-butylamino)methylsilane, di-tert-butoxy(tert-butylamino)methylsilane, di-tert-pentoxy(methylamino)methylsilane, di-tert-pentoxy(ethylamino)methylsilane, di-tert-pentoxy(iso-propylamino)methylsilane, di-tert-pentoxy(n-butylamino)methylsilane, di-tert-pentoxy(sec-butylamino)methylsilane, di-tert-pentoxy(iso-butylamino)methylsilane, di-tert-pentoxy(tert-butylamino)methylsilane, dimethoxy(phenylmethylamino)methylsilane, and diethoxy(phenylmethylamino)methylsilane; and
a silicon precursor selected from the group consisting of bis(tert-butylamino)silane (BTBAS), bis(diethylamino)silane (BDEAS), di-iso-propylaminosilane (DIPAS), di-sec-butylaminosilane (DSBAS), tris(dimethylamino)silane (TRDMAS), tetraethoxysilane (TEOS), triethoxysilane (TES), di-tert-butoxysilane (DTBOS), di-tert-pentoxysilane (DTPOS), methyltriethoxysilane (MTES), tetramethoxysilane (TMOS), trimethoxysilane (TMOS), methyltrimethoxysilane (MTMOS), di-tert-butoxymethylsilane, di-tert-butoxyethylsilane, di-tert-pentoxymethylsilane, and di-tert-pentoxyethylsilane.