JP5769724B2 - 赤外線放射を感知する方法および装置 - Google Patents
赤外線放射を感知する方法および装置 Download PDFInfo
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Description
本出願は、2009年11月24日に出願された米国仮特許出願第61/264,071号の利益を主張するものであり、いかなる図、表または図面をも含めて、その全体が本明細書に参照により組み込まれる。
Claims (31)
- 第1の電極と、赤外線(IR)感知層と、第1の発光デバイスと、第1の電荷分離層と、第2の発光デバイスと、第2の電極とを備えたデバイスであって、
前記赤外線感知層の第1の端部は、前記第1の電極と接しており、
前記第1の発光デバイスの第1の端部は、前記赤外線感知層の第2の端部と接しており、
前記第1の電荷分離層の第1の端部は、前記第1の発光デバイスの第2の端部と接しており、
前記第2の発光デバイスの第1の端部は、前記第1の電荷分離層の第2の端部と接しており、
電位が前記第1および第2の電極間に印加され、前記IR感知層がIR放射にさらされた場合に、感知電子および感知正孔がIR感知層内で生成され、かつ第1の正孔および第1の電子が前記第1の電荷分離層内で生成され、前記第1の正孔および前記第1の電子の一方が前記第1の発光デバイスに移され、前記IR感知層内で生成された前記感知電子および前記感知正孔の一方が前記第1の発光デバイスに移され、それぞれ前記第1の正孔および前記第1の電子の一方と結合し、前記第1の発光デバイスにおいて第1の放出光子を作り出し、前記第1の電荷分離層内で生成された前記第1の正孔および前記第1の電子の他方が前記第2の発光デバイスに移され、前記第2の発光デバイスに移された対応する電子または正孔と結合し、第2の放出光子を作り出す、赤外線(IR)放射感知デバイス。 - 前記感知電子が前記第1の発光デバイスに移り、前記第1の正孔と結合し、前記第1の電子が前記第2の発光デバイスに移り、前記第2の発光デバイスに移された前記対応する正孔と結合する、請求項1に記載のデバイス。
- 前記感知正孔が前記第1の発光デバイスに移され、前記第1の電子と結合し、前記第1の正孔が前記第2の発光デバイスに移され、前記第2の発光デバイスに移された前記対応する電子と結合する、請求項1に記載のデバイス。
- 前記第2の発光デバイスに移された前記対応する電子または正孔が、前記第2の電極から前記第2の発光デバイスに移される、請求項1に記載のデバイス。
- 前記第1の電極が、少なくとも部分的に透明である、請求項1に記載のデバイス。
- 前記第2の電極が、少なくとも部分的に透明である、請求項1に記載のデバイス。
- 少なくとも1つの追加の発光デバイスおよび対応する少なくとも1つの追加の電荷分離層を更に備え、前記少なくとも1つの追加の発光デバイスの各々の第1の端部は前記対応する少なくとも1つの追加の電荷分離層の第2の端部と接しており、前記少なくとも1つの追加の発光デバイスおよび前記対応する少なくとも1つの追加の電荷分離層は、前記第1の追加の電荷分離層の前記第1の端部が前記第2の発光デバイスの前記第2の端部と接し、前記第2の電極が前記少なくとも1つの追加の発光デバイスのうちの最後の発光デバイスの第2の端部と接するように前記第2の発光デバイスの前記第2の端部と前記第2の電極の間に挿入され、前記第1の電荷分離層内で生成された前記第1の正孔および前記第1の電子の他方は、前記第2の発光デバイスに通され、前記第2の電荷分離層から前記第2の発光デバイスに移された対応する電子または正孔と結合し、前記第2の発光デバイスに移された前記対応する電子または正孔は、前記第1の追加の電荷分離層内で生成された第2の電子または第2の正孔の一方であり、前記第2の電子または第2の正孔の他方は、前記第1の追加の発光デバイスに通され、前記第2の電極または第2の追加の電荷分離層から前記第1の追加の発光デバイスに移された対応する電子または正孔と結合する、請求項1に記載のデバイス。
- 前記赤外線感知層の電流密度が1mA/cm2より低い、請求項1に記載のデバイス。
- 前記第1の発光デバイスおよび前記第2の発光デバイスが発光ダイオードである、請求項1に記載のデバイス。
- 前記第1の発光デバイスおよび前記第2の発光デバイスが有機発光デバイスである、請求項1に記載のデバイス。
- 前記IR感知層が有機IR感知層である、請求項10に記載のデバイス。
- 前記第1の発光デバイスおよび前記第2の発光デバイスが薄膜発光デバイスである、請求項1に記載のデバイス。
- 前記少なくとも1つの追加の発光デバイスが1つから6つの追加の発光デバイスを含み、前記対応する少なくとも1つの追加の電荷分離層が対応する1つから6つの追加の電荷分離層を含む、請求項7に記載のデバイス。
- 前記第1の放出光子および前記第2の放出光子が可視光子である、請求項1に記載のデバイス。
- 前記IR感知層が0.8μmから2μmの範囲の波長を感知する、請求項1に記載のデバイス。
- 前記第1の放出光子および前記第2の放出光子が異なる波長を有する、請求項1に記載のデバイス。
- 前記第1の有機発光デバイスおよび前記第2の有機発光デバイスの少なくとも一方が、青色光を放射する第1の色素分子、緑色光を放射する第2の色素分子、および赤色光を放射する第3の色素分子を有する有機発光層を含む、請求項10に記載のデバイス。
- 第1の電極と、赤外線(IR)感知層と、第1の発光デバイスと、第1の電荷分離層と、第2の発光デバイスと、第2の電極とを備えたデバイスであって、
前記第1の発光デバイスは、前記赤外線感知層によって、前記第1の電極から離されており、
前記第2の発光デバイスは、前記第1の電荷分離層によって、前記第1の発光デバイスから離されており、
電位が前記第1および第2の電極間に印加され、前記IR感知層がIR放射にさらされた場合に、感知電子および感知正孔がIR感知層内で生成され、かつ第1の正孔および第1の電子が前記第1の電荷分離層内で生成され、前記第1の正孔および前記第1の電子の一方が前記第1の発光デバイスに移され、前記IR感知層内で生成された前記感知電子および前記感知正孔の一方が前記第1の発光デバイスに移され、それぞれ前記第1の正孔および前記第1の電子の一方と結合し、前記第1の発光デバイスにおいて第1の放出光子を作り出し、前記第1の電荷分離層内で生成された前記第1の正孔および前記第1の電子の他方が前記第2の発光デバイスに移され、前記第2の発光デバイスに移された対応する電子または正孔と結合し、第2の放出光子を作り出す、デバイス。 - 少なくとも1つの追加の発光デバイスおよび少なくとも1つの追加の電荷分離層を更に備え、前記少なくとも1つの追加の発光デバイスおよび前記少なくとも1つの追加の電荷分離層は、前記第2の発光デバイスと前記第2の電極の間に挿入され、前記少なくとも1つの追加の発光デバイスおよび前記少なくとも1つの追加の電荷分離層は、交互に配置される、請求項18に記載のデバイス。
- 前記少なくとも1つの追加の発光デバイスが1つから6つの追加の発光デバイスを含み、前記少なくとも1つの追加の電荷分離層が1つから6つの追加の電荷分離層を含む、請求項19に記載のデバイス。
- 前記赤外線感知層が0.8μmから2μmの範囲の波長を感知する、請求項18に記載のデバイス。
- 前記赤外線感知層が1μmから4μmの範囲の波長を感知する、する、請求項18に記載のデバイス。
- 前記赤外線感知層が有機材料で構成される、請求項18に記載のデバイス。
- 前記赤外線感知層がPbS量子ドットおよび/またはPbSe量子ドットで構成される、請求項18に記載のデバイス。
- 前記赤外線感知層の電流密度が1mA/cm2より低い、請求項18に記載のデバイス。
- 前記第1の電極と前記赤外線感知層との間に配置される正孔ブロック層を備える、請求項18に記載のデバイス。
- 前記正孔ブロック層は、ZnOおよび/またはTiO2で構成される、請求項26に記載のデバイス。
- 前記第1の発光デバイスおよび/または前記第2の発光デバイスが有機発光デバイスである、請求項18に記載のデバイス。
- 前記第1の発光デバイスおよび/または前記第2の発光デバイスが蛍光エミッタを備える、請求項18に記載のデバイス。
- 前記第1の光子および/または前記第2の光子が可視光領域の波長を有する、請求項18に記載のデバイス。
- 前記第1の光子および前記第2の光子が異なる波長を有する、する、請求項18に記載のデバイス。
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