JP2012033903A - 半導体膜の作製方法、半導体装置の作製方法、及び光電変換装置の作製方法 - Google Patents
半導体膜の作製方法、半導体装置の作製方法、及び光電変換装置の作製方法 Download PDFInfo
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- JP2012033903A JP2012033903A JP2011141550A JP2011141550A JP2012033903A JP 2012033903 A JP2012033903 A JP 2012033903A JP 2011141550 A JP2011141550 A JP 2011141550A JP 2011141550 A JP2011141550 A JP 2011141550A JP 2012033903 A JP2012033903 A JP 2012033903A
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/20—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof such devices or parts thereof comprising amorphous semiconductor materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02524—Group 14 semiconducting materials
- H01L21/02532—Silicon, silicon germanium, germanium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/0257—Doping during depositing
- H01L21/02573—Conductivity type
- H01L21/02576—N-type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02587—Structure
- H01L21/0259—Microstructure
- H01L21/02592—Microstructure amorphous
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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Abstract
【解決手段】プラズマCVD法により不純物元素を有する非晶質半導体を形成する方法において、パッシェンの法則で最小放電開始電圧を満たす圧力及び電極間隔において、パルス変調した放電開始電圧を電極に印加することより、抵抗率の低い不純物元素を有する非晶質半導体を形成する。
【選択図】図1
Description
本実施の形態では、抵抗率が低い不純物元素を有する非晶質半導体膜の作製方法について、図1を用いて説明する。
なお、pは反応室内の圧力、dは電極間隔、γは二次電子放出係数(電極材料の仕事関数に依存)、A及びBはガスの種類に依存する定数である。
本実施の形態では、本発明の一形態である半導体装置に形成される薄膜トランジスタの作製方法について、図2乃至図4を参照して説明する。なお、薄膜トランジスタは、p型よりもn型の方が、キャリアの移動度が高い。また、同一の基板上に形成する薄膜トランジスタを全て同じ極性に統一すると、工程数を抑えることができ、好ましい。そのため、本実施の形態では、n型の薄膜トランジスタの作製方法について説明する。
本実施の形態では、本発明の一態様である半導体装置に形成される薄膜トランジスタの作製方法について、図2、図4、及び図5を参照して説明する。図5は、図4(B)に示す工程に対応する工程である。
薄膜トランジスタを作製し、該薄膜トランジスタを画素部、さらには駆動回路に用いて表示機能を有する半導体装置(表示装置ともいう)を作製することができる。また、薄膜トランジスタを用いた駆動回路の一部または全体を、画素部と同じ基板上に一体形成し、システムオンパネルを形成することができる。
本実施の形態では、半導体装置の一形態である光電変換装置について、説明する。本実施の形態に示す光電変換装置では、導電型を示す半導体膜に、実施の形態1に示すような、抵抗率が低い不純物元素を有する非晶質半導体膜を採用する。
本明細書に開示する半導体装置は、電子ペーパーとして適用することができる。電子ペーパーは、情報を表示するものであればあらゆる分野の電子機器に用いることが可能である。例えば、電子ペーパーを用いて、電子書籍(電子ブック)、ポスター、デジタルサイネージ、PID(Public Information Display)、電車などの乗り物の車内広告、クレジットカード等の各種カードにおける表示等に適用することができる。電子機器の一例を図7に示す。
本明細書に開示する半導体装置は、さまざまな電子機器(遊技機も含む)に適用することができる。電子機器としては、例えば、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)、コンピュータ用などのモニタ、デジタルカメラ、デジタルビデオカメラ、デジタルフォトフレーム、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯型ゲーム機、携帯情報端末、音響再生装置、パチンコ機などの大型ゲーム機などが挙げられる。
・条件1
電極間隔距離を8mm、反応室の圧力を1350Pa、投入電力を20W
・条件2
電極間隔距離を10mm、反応室の圧力を750Pa、投入電力を15W
・連続発振(CW)による放電
・RF電源周波数のオン及びオフ状態の周波数が10kHzであり、デューティー比が70%となるパルス変調による放電(オン時間が70μ秒、オフ時間が30μ秒)
・RF電源周波数のオン及びオフ状態の周波数が10kHzであり、デューティー比が50%となるパルス変調による放電(オン時間が50μ秒、オフ時間が50μ秒)
・RF電源周波数のオン及びオフ状態の周波数が10kHzであり、デューティー比が30%となるパルス変調による放電(オン時間が30μ秒、オフ時間が70μ秒)
Claims (8)
- シリコンを含む堆積性気体及び不純物元素を有する気体を原料ガスとして混合して反応室に導入し、
パッシェン曲線において放電開始電圧が最小放電開始電圧となる前記反応室の圧力及び電極間隔とし、
パルス変調した前記放電開始電圧を前記電極に印加して、
不純物元素を有する非晶質半導体膜を形成することを特徴とする半導体膜の作製方法。 - 基板上に、ゲート電極を形成し、
前記基板及び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、微結晶半導体膜を形成し、
前記微結晶半導体膜上に、微結晶半導体領域及び非晶質半導体領域を有する半導体膜を形成し、
シリコンを含む堆積性気体及び不純物元素を有する気体を原料ガスとして混合して反応室に導入し、パッシェン曲線において放電開始電圧が最小放電開始電圧となる前記反応室の圧力及び電極間隔とし、パルス変調した前記放電開始電圧を前記電極に印加して、前記半導体膜上に不純物元素を有する非晶質半導体膜を形成し、
前記不純物元素を有する非晶質半導体膜の一部をエッチングして、島状の不純物元素を有する非晶質半導体膜を形成し、
前記微結晶半導体膜、及び前記半導体膜の一部をエッチングして、島状の第1の半導体積層体を形成し、
前記島状の不純物元素を有する非晶質半導体膜上に、ソース電極及びドレイン電極として機能する配線を形成し、
前記島状の不純物元素を有する非晶質半導体膜をエッチングして、ソース領域及びドレイン領域として機能する一対の不純物元素を有する非晶質半導体膜を形成することを特徴とする半導体装置の作製方法。 - 請求項2において、前記第1の半導体積層体を形成し、前記第1の半導体積層体上に、ソース電極及びドレイン電極として機能する配線を形成する前において、
前記第1の半導体積層体の側面をプラズマに曝して、前記第1の半導体積層体の側面に障壁領域を形成することを特徴とする半導体装置の作製方法。 - 請求項2または請求項3において、前記第1の半導体積層体の一部をエッチングして、微結晶半導体領域及び一対の非晶質半導体領域が積層される第2の半導体積層体を形成し、
前記配線、前記一対の島状の不純物元素を有する非晶質半導体膜、前記第2の半導体積層体、及び前記ゲート絶縁膜上に絶縁膜を形成し、
前記絶縁膜上に、バックゲート電極を形成することを特徴とする半導体装置の作製方法。 - 請求項4において、前記ゲート電極と前記バックゲート電極が平行であることを特徴とする半導体装置の作製方法。
- 請求項4において、前記ゲート電極と前記バックゲート電極が接続していることを特徴とする半導体装置の作製方法。
- 請求項4において、前記バックゲート電極はフローティング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、第1の電極を形成し、
前記第1の電極上に、第1の導電型を示す半導体膜を形成し、
前記第1の導電型を示す半導体膜上に、光電変換を行う半導体膜を形成し、
前記光電変換を行う半導体膜上に、第2の導電型を示す半導体膜を形成し、
前記第2の導電型を示す半導体膜上に第2の電極を形成し、
前記第1の導電型を示す半導体膜、及び前記第2の導電型を示す半導体膜のいずれか一以上において、
シリコンを含む堆積性気体及び不純物元素を有する気体を原料ガスとして混合して反応室に導入し、パッシェン曲線において放電開始電圧が最小放電開始電圧となる前記反応室の圧力及び電極間隔とし、パルス変調した前記放電開始電圧を前記電極に印加して、前記半導体膜上に不純物元素を有する非晶質半導体膜を形成する光電変換装置の作製方法。
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US9450139B2 (en) | 2016-09-20 |
US9443989B2 (en) | 2016-09-13 |
TW201205646A (en) | 2012-02-01 |
TWI606490B (zh) | 2017-11-21 |
US20120003787A1 (en) | 2012-01-05 |
KR20120003385A (ko) | 2012-01-10 |
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