JP2006156972A - 半導体装置及びその作製方法 - Google Patents
半導体装置及びその作製方法 Download PDFInfo
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- JP2006156972A JP2006156972A JP2005308957A JP2005308957A JP2006156972A JP 2006156972 A JP2006156972 A JP 2006156972A JP 2005308957 A JP2005308957 A JP 2005308957A JP 2005308957 A JP2005308957 A JP 2005308957A JP 2006156972 A JP2006156972 A JP 2006156972A
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Abstract
【解決手段】 本発明は、チャネル形成領域となる島状半導体膜と、前記島状半導体膜の側面に接し、ソース領域又はドレイン領域となる半導体膜を有する半導体装置及びその作製方法に関する。チャネル形成領域となる島状半導体膜とソース領域又はドレイン領域となる半導体膜をドーピング装置を用いないで形成することにより、製造コストを抑制することができる。かつチャネル形成領域である島状半導体膜の側面にソース領域又はドレイン領域が接することにより、空乏層が膜厚方向だけでなく横方向に広がり、ドレイン電圧による電界が緩和されるため信頼性の高い半導体装置を作製することができる。
【選択図】 図1
Description
ゲート絶縁膜:酸化珪素膜、厚さ100nm、
チャネル形成領域:シリコン膜、厚さ100nm、ボロンドープ1×1016cm−3、Lovの長さ1μm、
ゲート電極:モリブデン(Mo)、厚さ100nm、長さ6μm、
ソース領域又はドレイン領域:リンドープ1×1020cm−3、長さ1μm、
ただし、TFTの幅は1μmとした。
できる。
属から選択された元素、たとえばホウ素(B)を含んでいてもよい。
102 ゲート電極
103 ゲート絶縁膜
104 島状結晶性半導体膜
105 半導体膜
106 電極
107 空乏層
Claims (7)
- 基板上にゲート電極と、
前記ゲート電極上にゲート絶縁膜と、
前記ゲート絶縁膜上に、13属の元素を含む島状半導体膜と、
前記13属の元素を含む島状半導体膜の上面の一部及び側面に接する、15属の元素を含む半導体膜と、
前記15属の元素を含む半導体膜上に電極と、
を有し、
前記13属の元素を含む島状半導体膜はチャネル形成領域であり、
前記15属の元素を含む半導体膜はソース領域又はドレイン領域であることを特徴とする半導体装置。 - 基板上にゲート電極と、
前記ゲート電極上にゲート絶縁膜と、
前記ゲート絶縁膜上に、13属の元素を含む島状半導体膜と、
前記13属の元素を含む島状半導体膜の上面の一部及び側面に接し、前記島状半導体膜よりも高い濃度の13属の元素を含む半導体膜と、
前記13属の元素を含む半導体膜上に電極と、
を有し、
前記13属の元素を含む島状半導体膜はチャネル形成領域であり、
前記13属の元素を含む半導体膜はソース領域又はドレイン領域であることを特徴とする半導体装置。 - 請求項1又は請求項2において、
前記島状半導体膜は、結晶性半導体膜であることを特徴とする半導体装置。 - 基板上にゲート電極を形成し、
前記ゲート電極上にゲート絶縁膜を形成し、
前記ゲート絶縁膜上に13属の元素を含む島状半導体膜を形成し、
前記13属の元素を含む島状半導体膜の上面の一部及び側面に接して、15属の元素を含む半導体膜を形成し、
前記15属の元素を含む半導体膜上に電極を形成し、
前記13属の元素を含む島状半導体膜はチャネル形成領域であり、
前記15属の元素を含む半導体膜はソース領域又はドレイン領域であることを特徴とする半導体装置の作製方法。 - 基板上にゲート電極を形成し、
前記ゲート電極上にゲート絶縁膜を形成し、
前記ゲート絶縁膜上に13属の元素を含む島状半導体膜を形成し、
前記13属の元素を含む島状半導体膜の上面の一部及び側面に接して、前記13属の元素を含む島状半導体膜よりも高い濃度の13属の元素を含む半導体膜を形成し、
前記13属の元素を含む半導体膜上に電極を形成し、
前記13属の元素を含む島状半導体膜はチャネル形成領域であり、
前記13属の元素を含む半導体膜はソース領域又はドレイン領域であることを特徴とする半導体装置の作製方法。 - 基板上にゲート電極を形成し、
前記ゲート電極上にゲート絶縁膜を形成し、
前記ゲート絶縁膜上に13属の元素を含む非晶質半導体膜を形成し、
前記13属の元素を含む非晶質半導体膜に、結晶化を促進する触媒元素を導入し、
前記13属の元素を含む非晶質半導体膜を加熱して、結晶性半導体膜を形成し、
前記結晶性半導体膜を用いて、島状結晶性半導体膜を形成し、
前記島状結晶性半導体膜の上面の一部及び側面に接して、15属の元素を含む半導体膜を形成し、
前記島状結晶性半導体膜及び前記15属の元素を含む半導体膜を加熱して、前記島状結晶性半導体膜中の前記触媒元素を前記15属の元素を含む半導体膜に移動させることによって除去し、
前記15属の元素を含む半導体膜上に電極を形成し、
前記島状結晶性半導体膜はチャネル形成領域であり、
前記15属の元素を含む半導体膜はソース領域又はドレイン領域であることを特徴とする半導体装置の作製方法。 - 請求項6において、
前記触媒元素は、ニッケル(Ni)、ゲルマニウム(Ge)、鉄(Fe)、パラジウム(Pd)、スズ(Sn)、鉛(Pb)、コバルト(Co)、白金(Pt)、銅(Cu)、金(Au)から選ばれた一つの元素、又は複数の元素であることを特徴とする半導体装置の作製方法。
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Cited By (5)
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JP2008218626A (ja) * | 2007-03-02 | 2008-09-18 | Mitsubishi Electric Corp | Tftアレイ基板及びその製造方法 |
JP2009212170A (ja) * | 2008-02-29 | 2009-09-17 | Semiconductor Energy Lab Co Ltd | 薄膜トランジスタ及び表示装置 |
WO2014196216A1 (ja) * | 2013-06-05 | 2014-12-11 | 株式会社 東芝 | イメージセンサ装置及びその製造方法 |
CN104485362A (zh) * | 2007-08-31 | 2015-04-01 | 株式会社半导体能源研究所 | 显示装置以及显示装置的制造方法 |
JP2018101640A (ja) * | 2008-10-16 | 2018-06-28 | 株式会社半導体エネルギー研究所 | 発光装置及び表示装置 |
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JPH0818053A (ja) * | 1994-06-28 | 1996-01-19 | Mitsubishi Electric Corp | 薄膜トランジスタ及びその製造方法 |
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JP2008218626A (ja) * | 2007-03-02 | 2008-09-18 | Mitsubishi Electric Corp | Tftアレイ基板及びその製造方法 |
CN104485362A (zh) * | 2007-08-31 | 2015-04-01 | 株式会社半导体能源研究所 | 显示装置以及显示装置的制造方法 |
JP2009212170A (ja) * | 2008-02-29 | 2009-09-17 | Semiconductor Energy Lab Co Ltd | 薄膜トランジスタ及び表示装置 |
JP2018101640A (ja) * | 2008-10-16 | 2018-06-28 | 株式会社半導体エネルギー研究所 | 発光装置及び表示装置 |
US11189676B2 (en) | 2008-10-16 | 2021-11-30 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting device having fluorescent and phosphorescent materials |
US11930668B2 (en) | 2008-10-16 | 2024-03-12 | Semiconductor Energy Laboratory Co., Ltd. | Flexible light-emitting device and EL module including transparent conductive film |
WO2014196216A1 (ja) * | 2013-06-05 | 2014-12-11 | 株式会社 東芝 | イメージセンサ装置及びその製造方法 |
US9787924B2 (en) | 2013-06-05 | 2017-10-10 | Kabushiki Kaisha Toshiba | Image sensor device, image processing device and method for manufacturing image sensor device |
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