JP7032574B2 - 低放射率薄膜コーティング中に超高速レーザー処理した銀含有層を含むコーティングされた物品、及び/又はその製造方法 - Google Patents
低放射率薄膜コーティング中に超高速レーザー処理した銀含有層を含むコーティングされた物品、及び/又はその製造方法 Download PDFInfo
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- C03C3/00—Glass compositions
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- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
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- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
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- E—FIXED CONSTRUCTIONS
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- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
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- C03C2217/00—Coatings on glass
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- C03C2217/21—Oxides
- C03C2217/228—Other specific oxides
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- C03C2217/281—Nitrides
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- C03C2218/30—Aspects of methods for coating glass not covered above
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- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
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Description
Tm,f=T0(1-σSL/(L0<r>))であり、
式中、Tmは粒径(例えば、半径)rを有するフィルムの融点であり、T0は銀膜のバルク融解温度であり、σSLは固液界面エネルギーであり、L0は、融合のバルク潜熱である。しかしながら、薄膜積層体環境における真空圧力が考慮されても、この等式から予測されるものとTm、fの実験的に導かれた値との間に大きな差がある。これに対する1つの考えられる理由は、曲率効果又は非平衡効果による固液界面エネルギーの変化であるかもしれない。実際に、レーザー光は、表面プラズモン励起を介してAg/絶縁体フィルム界面に結合し、それによって集合的な電子振動が、レーザー光子の効率的な吸収を促進する。
・レーザーモード:ピコ秒以下、より好ましくは1、10、又は100フェムト秒単位(ただし、場合によっては更に短い)の幅のパルス。特定の例示的実施形態では、パルスモード持続時間は、10-12秒、より好ましくは1、10、又は100フェムト秒単位であってもよい。数ピコ秒未満(例えば、9ピコ秒未満、より好ましくは5ピコ秒未満、更により好ましくは1~3ピコ秒以下)が好ましい。1つの例示的な持続時間は、100~500フェムト秒(より好ましくは100~300フェムト秒、例えば、100又は200フェムト秒)である。1フェムト秒未満の持続時間において、例えば、約30kW/cm2の見かけの閾値が満たされないため、本明細書に記載される結果を達成するには、電力密度は、一般には低すぎることになる。
・レーザータイプ:エキシマレーザー(例えば、チャープモードで操作)。いくつかの例では、SHG(第二次高調波発生)レーザーに対するタンデムTi-サファイヤも使用することができる。
・電力密度:少なくとも約30kW/cm2、より好ましくは少なくとも約50kW/cm2。電力密度は、好ましくは、フィルムに対する損傷又は傷跡を回避するように選択される。50kW/cm2では、50%を超える結晶化が達成された。
・波長:一般に、355~500nmの波長を使用することができる。サンプルを、355nmの波長のエキシマレーザーを用いて作製した。また、サンプルを、400nmのSHGレーザーを用いて作製した。場合によっては、405nmのGaNレーザーを使用することができる。
・ビームプロファイル:均一フラットトップ(HFT)。HFTビームプロファイル(例えば、ガウシアンビームプロファイルと比較して)は、有利には表面に顕微鏡的傷跡を残さず、耐食性の改善が観察された。
・ビームサイズ:好ましくは<500マイクロメートルであり、特定の例示的実施形態では、鋭利なビームが可能である。
・促進される吸収機構:界面及びバルクAgプラズモン媒体(例えば、積層体内に別個の吸収層を有することによって支援される熱プロファイルを使用することと比較して)。この方法は、有利には、一重、二重、及び三重の銀積層体上で良好に機能する。特定の例示的実施形態は、有利には、別個の吸収層を欠いており、その代わりに、上記のようにアサーマルである。
・ビーム光学:非常に高い走査速度の移動ターゲットを伴う、ガルバノレーザーの可能性がある。いくつかの実装では、Shafter-Kirchoofのライン発生器を使用することができる。
・フルエンス範囲:0.5~5J/cm2、より好ましくは0.5~3J/cm2、及び場合によっては最小0.1~0.6J/cm2
・繰り返し率:1~100KHz
・ショット間安定性:0.5~1%rms
・長期駆動:0.1-0.5%rms
・レーザー処理環境:レーザー処理は、周囲空気、窒素環境、完全又は部分的真空下などで行われてもよい。
サンプルセット1
サンプルセット2
サンプルセット3
Claims (22)
- コーティングされた物品を作製する方法であって、
基材上に低放射率(low-E)コーティングを形成することであって、前記low-Eコーティングは、少なくとも1つのスパッタリング蒸着された銀系層を含み、各前記銀系層は1つ以上の誘電体層の間に挟まれている、ことと、
前記low-Eコーティングを、10 -12 秒以下の持続時間、355~500nmの波長、及び30kW/cm 2 を超えるエネルギー密度を有するレーザーパルスに露光することであって、前記露光は、前記low-Eコーティングの温度が300℃を超えて上昇することを回避する一方で、(a)各前記銀系層に対する粒界、及び各前記銀系層内の空孔、(b)各前記銀系層の屈折率、並びに、(c)蒸着されたままの状態と比較した前記low-Eコーティングの放射率を減少させるように実行される、ことと、を含む、方法。 - 前記基材がホウケイ酸塩ガラスである、請求項1に記載の方法。
- 前記基材がソーダ石灰シリカガラスである、請求項1に記載の方法。
- 各前記銀系層が、酸化亜鉛を含むそれぞれの層の上に提供され、これらに接触している、請求項1~3のいずれか一項に記載の方法。
- 酸化亜鉛を含む各前記層が、前記露光前に実質的に結晶質である、請求項4に記載の方法。
- 前記low-Eコーティングが、第1及び第2の銀系層を含む、請求項1~5のいずれか一項に記載の方法。
- 前記low-Eコーティングが、少なくとも3つの銀系層を含む、請求項1~6のいずれか一項に記載の方法。
- 前記low-Eコーティングが、複数の銀系層を含み、前記露光が、下層の前記銀系層のテクスチャよりも最上層の前記銀系層のテクスチャを変更するように実施される、請求項1~7のいずれか一項に記載の方法。
- 前記レーザーパルスが、少なくとも50kW/cm 2 のエネルギー密度、及び/又は1、10、若しくは100フェムト秒単位の持続時間を有する、請求項1~8のいずれか一項に記載の方法。
- 前記露光後に前記low-Eコーティングを熱処理することを更に含む、請求項1~9のいずれか一項に記載の方法。
- 前記露光が、前記low-Eコーティングの形成とインラインで実行される、請求項1~10のいずれか一項に記載の方法。
- 前記露光が、前記low-Eコーティングが形成される前記基材側から実行される、請求項1~11のいずれか一項に記載の方法。
- 前記low-Eコーティングの垂直放射率が、蒸着されたままの状態の前記low-Eコーティングと比較して少なくとも9%改善する、請求項1~12のいずれか一項に記載の方法。
- 前記露光が、各前記銀系層のそれぞれの少なくとも一部の再結晶化を促進するように実行される、請求項1~13のいずれか一項に記載の方法。
- 前記露光が、少なくとも銀系層に対してアサーマルである、請求項1~14のいずれか一項に記載の方法。
- コーティングされた物品を作製する方法であって、
ガラス基材上に低放射率(low-E)コーティングを有することであって、前記low-Eコーティングは、少なくとも1つのスパッタリング蒸着された銀系層を含み、前記銀系層は少なくとも第1の誘電体層と第2の誘電体層との間に挟まれている、ことと、
前記low-Eコーティングを、10 -12 秒以下の持続時間及び少なくとも50kW/cm 2 のエネルギー密度を有するレーザーパルスに露光することであって、前記露光は、前記low-Eコーティングの温度が300℃を超えて上昇することを回避する一方で、(a)前記銀系層内の空孔を減少させる、(b)前記銀系層の屈折率を減少させる、(c)前記low-Eコーティングの可視透過率を上昇させる、かつ、(d)前記low-Eコーティングの放射率を、蒸着されたままの形態と比較して、任意に前記low-Eコーティングの放射率低減とシート抵抗低減との間の関係性を切り離すのに十分なレベルまで減少させるように実行される、ことと、を含む、方法。 - 前記銀系層が、酸化亜鉛を含むそれぞれの層の上に提供され、これらに接触している、請求項16に記載の方法。
- 前記レーザーパルスが、1、10、又は100フェムト秒以下の持続時間を有する、請求項16~17のいずれか一項に記載の方法。
- 前記low-Eコーティングの垂直放射率が、蒸着されたままの状態の前記low-Eコーティングと比較して少なくとも9%改善する、請求項16~18のいずれか一項に記載の方法。
- 前記露光が、前記銀系層の少なくとも一部の再結晶化、及び/又は前記銀系層に対する粒界の減少を促進するように実行される、請求項16~19のいずれか一項に記載の方法。
- 前記露光が、前記銀系層に対してアサーマルである、請求項16~20のいずれか一項に記載の方法。
- 前記low-Eコーティングが、複数の銀系層を含み、前記露光が、下層の前記銀系層のテクスチャよりも最上層の前記銀系層のテクスチャを変更するように実施される、請求項16~21のいずれか一項に記載の方法。
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US16/052,166 | 2018-08-01 | ||
US16/052,166 US10822270B2 (en) | 2018-08-01 | 2018-08-01 | Coated article including ultra-fast laser treated silver-inclusive layer in low-emissivity thin film coating, and/or method of making the same |
PCT/IB2019/056575 WO2020026192A1 (en) | 2018-08-01 | 2019-08-01 | Coated article including ultra-fast laser treated silver-inclusive layer in low-emissivity thin film coating, and/or method of making the same |
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US11498867B2 (en) | 2020-10-01 | 2022-11-15 | Guardian Glass, LLC | Coated article with IR reflecting layer designed for low u-value and higher g-value and method of making same |
US20230258844A1 (en) | 2022-02-17 | 2023-08-17 | Guardian Glass, LLC | Heat treatable coated article having antireflective coating(s) on substrate |
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US11236014B2 (en) | 2022-02-01 |
US10822270B2 (en) | 2020-11-03 |
EP3830049B1 (en) | 2023-08-30 |
KR102289724B1 (ko) | 2021-08-17 |
CA3099232A1 (en) | 2020-02-06 |
BR112020025635B1 (pt) | 2021-11-09 |
AU2019313615A1 (en) | 2021-03-18 |
PL3830049T3 (pl) | 2024-02-26 |
AU2019313615B2 (en) | 2021-09-09 |
US20200039874A1 (en) | 2020-02-06 |
CN112135804A (zh) | 2020-12-25 |
KR20210102480A (ko) | 2021-08-19 |
MX2021000832A (es) | 2021-03-25 |
KR20210006461A (ko) | 2021-01-18 |
US20210024410A1 (en) | 2021-01-28 |
CN112135804B (zh) | 2022-03-22 |
BR112020025635A2 (pt) | 2021-03-23 |
BR122021001892A2 (pt) | 2021-04-06 |
JP2021518835A (ja) | 2021-08-05 |
NZ773387A (en) | 2022-11-25 |
KR102531320B1 (ko) | 2023-05-12 |
ES2958220T3 (es) | 2024-02-05 |
BR122021001892B1 (pt) | 2021-11-09 |
EP3830049A1 (en) | 2021-06-09 |
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