Selective phosphorus doping of polycrystalline silicon on glass using self-assembled monolayer doping (MLD) and flash anneal
Selective phosphorus doping of polycrystalline silicon on glass using self-assembled monolayer doping (MLD) and flash anneal
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使用自组装单层掺杂 (MLD) 和闪速退火对玻璃上多晶硅进行选择性磷掺杂
DOI:
10.1016/j.matlet.2021.130780
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发表时间:
2021
影响因子:
3
通讯作者:
Scott Williams, Santosh Kurinec
中科院分区:
文献类型:
--
作者:
Glenn Packard;Carolyn Spaulding;Alex Taylor;Karl Hirschman;Scott Williams, Santosh Kurinec
We report doping of thin (~60 nm) amorphous silicon (a-Si) on glass substrate to form n + polycrystalline silicon on glass in selective regions using Monolayer doping (MLD) via Flash Lamp Annealing (FLA). The phosphorus monolayer was formed on the exposed regions of SiO2patterned a-Si, through functionalization with chemically bound Diethyl vinylphosphonate (DVP) dopant molecules. The samples were capped with SiO2and annealed using a single xenon flash pulse (5.0 J/cm2, 250 μs) to simultaneously crystallize a-Si, incorporate and activate phosphorus dopants. SIMS results show an average concentration of 8x1019cm−3in the 60 nm of thin silicon on glass. Electrical results show a resistivity of ~6.60x10−2Ω.cm in doped regions. N-channel field effect transistor devices are successfully demonstrated using this MLD-FLA technique.
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