JP6072129B2 - ドーパント含有ポリマー膜を用いた基体のドーピング - Google Patents
ドーパント含有ポリマー膜を用いた基体のドーピング Download PDFInfo
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Description
本開示は、基体上に配置されるドーパント含有ポリマー膜を用いた基体のドーピングに関する。
この実施例は、ドーパント前駆体と相互作用して球状ドメインを形成する水素結合能力を有するブロックコポリマーを使用した、ドープされた基体の製造を実証する。
この実施例はスピンキャスティングによってドーパントポリマー膜を組織化させることを実証するために行われた。様々な厚みのポリマー膜(20nm〜30nm)が、濾過されたトルエン/メタノール溶液から、2000〜3000rpmの速度でシリコン基体上にスピンキャストされた。5mgのブロックコポリマーが1mLのトルエンに溶解させられ、そして60℃で4時間にわたって攪拌された。10mgのボロン酸ピナコールエステル(SMB)が1mLのメタノール中に溶解させられ、10mg/mLの最終溶液を得た。次いで、この溶液の適量(0.01mL〜0.1mL)がポリマー溶液に添加されて、1:0.1〜1:1で変化するポリマー対ドーパント比率の様々な溶液を提供した。これら溶液は室温で12〜24時間にわたって攪拌され、そして0.45μmのPTFEフィルタを通して濾過された。この適する溶液の75マイクロリットル(μL)が、清浄化されたシリコン基体の1×1cm正方形片の上に配置され、2000〜3000rpmの速度で回転させられた。この溶媒は周囲条件下で蒸発させられて乾燥膜を生じさせた。これら膜の名目厚みは20〜30nmであり、そしてこのブロックコポリマーの分子量に応じて変化することが認められた(使用されるポリマーの分子量については表1を参照)。ドーパント分子を含む球状ドメインP4VPブロックはシリコン基体上で六方最密充填形態で組織化する。ポリスチレンブロックは格子間空間を満たし、球体ドメイン間距離を画定する。表2は、シリコン上に堆積されたPS−b−P4VPポリマー薄膜の球状ドメイン集合体サイズおよび間隔を列挙する。表2に列挙された低分子の組み込みは、PS−P4VP薄膜から組織化した球状ドメインのサイズ、形状もしくは形態を変えなかった。
この実施例は、ブロックコポリマーのスパイクラピッドサーマルアニーリングによるアンチモンでのドーピングを実証するために行われた。超分子ブロックコポリマーRTAドーピングアプローチを用いたドーパント包接の多様性を実証するために、および電子顕微鏡観察特性付けを助けるために、PS−b−P4VP:フルオロアンチモン酸六水和物(以降、SMSb)ドーピング系が上述の様に開発された。PS−b−P4VP:SMB系と同様に、膜形成の際に、PS−b−P4VP:SMSbはシリコン基体上で六方最密充填相に組織化した。さらに、900℃または1000℃で0.1秒間にわたるRTAの際に、SIMS深さプロファイリング分析はシリコン基体へのSb拡散を示す(図10)。図10は、900℃(緑色)、950℃(青色)および1000℃(赤色)で1秒間にわたるスパイク−RTA後の基体における、SIMSアンチモン(Sb)濃度プロファイルを示し、円のデータ点は1:0.5のポリマー対SMSb比率でのPS27k−b−P4VP7k:フルオロアンチモン酸六水和物SMに対する表面からの深さの関数としてのアンチモンの濃度プロファイルに対応し、灰色のデータ点はブランク基体のSb濃度に対応する。
Claims (13)
- ブロックコポリマー、ドーパント前駆体および溶媒を含む組成物のコーティングを基体上に配置し、前記ブロックコポリマーは溶液中で球状ドメインに相分離し、かつ溶液中または前記基体の表面上にある間に前記ドーパント前駆体を埋め込むことができ、並びに
前記基体を550〜1300℃の温度で0.1秒〜24時間にわたってアニールして前記ドーパントを前記基体中に拡散させる
ことを含む、基体をドーピングする方法。 - 前記ドーパントがホウ素、リン、ヒ素、アンチモン、アルミニウム、インジウムおよびガリウムから選択される、請求項1に記載の方法。
- 前記基体が半導体基体である請求項1に記載の方法。
- 前記基体がシリコン、ゲルマニウム、ガリウムヒ素、インジウムヒ素、インジウムリン、およびインジウムガリウムヒ素の1種以上を含む、請求項3に記載の方法。
- シングルアニール工程(single annealing step)が行われる請求項1に記載の方法。
- 前記ドーパントが前記基体中に10nm以下の深さまで拡散させられる請求項1に記載の方法。
- 前記ブロックコポリマーが、前記ドーパント前駆体との水素結合またはイオン結合を受ける少なくとも1つのブロックを含む、請求項1に記載の方法。
- 前記ブロックコポリマーがポリスチレン−b−ポリ(4−ビニルピリジン)である請求項1に記載の方法。
- 前記ドーパント前駆体が4−ヒドロキシフェニルボロン酸ピナコールエステル、フルオロアンチモン酸六水和物、または前述のドーパント前駆体の少なくとも一種を含む組み合わせである、請求項1に記載の方法。
- 直径3〜30ナノメートルの埋め込まれたドーパントドメインを含む半導体基体であって、前記ドメインが第13族または第15族の原子を含み、前記埋め込まれた球状のドメインが前記基体の表面から30ナノメートル以内に位置する、半導体基体。
- シリコンを含む請求項10に記載の半導体基体。
- 前記埋め込まれたドーパントドメインが前記基体において周期性を示す、請求項10に記載の半導体基体。
- 第13族または第15族の原子の前記ドメインが前記基体にさらに拡散されて、前記球状のドメインを乱すかまたは弱めて、より連続した濃度のドーパント原子群を形成している、請求項10に記載の半導体基体。
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KR (1) | KR101738895B1 (ja) |
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CN109666334A (zh) * | 2017-10-17 | 2019-04-23 | Tcl集团股份有限公司 | 墨水及其制备方法与应用、及薄膜晶体管的制备方法 |
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JP5946010B2 (ja) * | 2011-09-16 | 2016-07-05 | 株式会社豊田中央研究所 | 量子ドット太陽電池およびその製造方法 |
JP2013235942A (ja) * | 2012-05-08 | 2013-11-21 | Hitachi Chemical Co Ltd | 不純物拡散層形成組成物、不純物拡散層の製造方法、太陽電池素子の製造方法、及び太陽電池 |
JP6006040B2 (ja) * | 2012-08-27 | 2016-10-12 | 株式会社Screenホールディングス | 基板処理装置 |
US9076719B2 (en) | 2013-08-21 | 2015-07-07 | The Regents Of The University Of California | Doping of a substrate via a dopant containing polymer film |
CN103728341B (zh) * | 2014-01-07 | 2016-06-08 | 哈尔滨工业大学 | 制备室温检测、大电流、快速响应的非贵金属掺杂wo3基氢敏传感器材料的方法 |
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CN105023833B (zh) | 2019-01-08 |
CN109920843A (zh) | 2019-06-21 |
CN105023833A (zh) | 2015-11-04 |
KR20150125587A (ko) | 2015-11-09 |
US20160035572A1 (en) | 2016-02-04 |
TWI579324B (zh) | 2017-04-21 |
KR101738895B1 (ko) | 2017-05-23 |
US10340144B2 (en) | 2019-07-02 |
US20170194150A1 (en) | 2017-07-06 |
JP2015213168A (ja) | 2015-11-26 |
US9576799B2 (en) | 2017-02-21 |
TW201605946A (zh) | 2016-02-16 |
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