JP2008182226A - 多層膜−ナノワイヤ複合体、両面及びタンデム太陽電池 - Google Patents
多層膜−ナノワイヤ複合体、両面及びタンデム太陽電池 Download PDFInfo
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- JP2008182226A JP2008182226A JP2008001735A JP2008001735A JP2008182226A JP 2008182226 A JP2008182226 A JP 2008182226A JP 2008001735 A JP2008001735 A JP 2008001735A JP 2008001735 A JP2008001735 A JP 2008001735A JP 2008182226 A JP2008182226 A JP 2008182226A
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- Y10S977/72—On an electrically conducting, semi-conducting, or semi-insulating substrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/755—Nanosheet or quantum barrier/well, i.e. layer structure having one dimension or thickness of 100 nm or less
- Y10S977/76—Superlattice with graded effective bandgap, e.g. "chirp-graded" superlattice
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/902—Specified use of nanostructure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/902—Specified use of nanostructure
- Y10S977/932—Specified use of nanostructure for electronic or optoelectronic application
- Y10S977/953—Detector using nanostructure
- Y10S977/954—Of radiant energy
Abstract
【解決手段】光起電力デバイス100は、2以上の表面を有する基板110、及び基板の少なくとも1つの表面の少なくとも一部上に配置された多層膜105を含む。複数の細長いナノ構造体125が多層膜上に配置される。デバイスにおいて、細長いナノ構造体に接触する多層膜の最上層がトンネル接合140である。デバイスは細長いナノ構造体上に堆積された1以上の層107を有し、この層が光活性接合の一部を画定する。ソーラーパネルは、光起電力デバイスを1以上備える。ソーラーパネルは、光起電力デバイスそれぞれを周囲の大気環境から隔離するとともに電力の発生を可能にする。
【選択図】図1
Description
pn接合ダイオードアレイ中におけるシリコンナノワイヤは文献に記載されている(Peng et al.,“Fabrication of Large−Area Silicon Nanowire p−n Junction Diode Arrays”,Adv.Mater.,2004,vol.16,pp.73−76)。しかし、かかるアレイは光起電力デバイスで使用するように形成されていない上、かかるアレイが太陽電池の効率を高めるために役立ち得ることも示唆されていない。
図1について説明すると、一実施形態の光起電力デバイス100は、(a)2以上の表面115および120を有する基板110、(b)基板110の少なくとも一部上に配置された多層膜105、(c)トンネル接合140上に配置された細長いナノ構造体125、及び(d)細長いナノ構造体125上に配置された1以上の層130を含むことができる(これらに限定されない)。
細長いナノ構造体は、通例、約100nm〜約100μmの範囲の長さ及び約5nm〜約1μmの範囲の幅を有する。一実施形態では、ナノ構造体は、(構成配置に応じて)基板、多結晶又はトンネル接合層上に、垂直配向にて、即ちこれらの層の平面に対して垂直な配向にて配列される。他の実施形態では、細長いナノ構造体はおおよそランダムな状態で配置される。細長いナノ構造体を0°〜90°の間の角度で配置できることが当業者に明らかである。
図2を参照すると、一実施形態では、光起電力デバイス200は、pドーパント又はnドーパントでドープされた基板210を含むことができる。pn接合を発生するもっとも簡単な配列は、基板とは反対にドープされた第1層250との配列である。層250は多結晶、単結晶、非晶質いずれでもよい。当業者に明らかなように、層250の正確な性質は基板210の選択に依存する。層240はトンネル接合として作用し、細長いナノ構造体225で発生する光活性接合を分離する。層230は細長いナノ構造体225上にコンフォーマルに堆積することができる。層230及び細長いナノ構造体225のドーピングは互いに反対にして、接合を確立することができる。
一実施形態では、図6に示すように、上記ナノ構造体に基づく光起電力デバイスの製造方法600は下記の工程で進行する。図6を参照すると、第1工程(工程601)で、多層膜を基板の少なくとも1つの表面上に配置する。つぎに(工程602)、細長いナノ構造体を多層膜上に配置する。工程603で、少なくとも1層を細長いナノ構造体上にコンフォーマルに堆積する。テンプレートが存在しない場合、コンフォーマル層は順次の層それぞれの表面上に延在し、隣接するナノ構造体間に延在する。工程604で、透明導電性材料を非晶質層上に層として堆積する。そして工程605で、デバイスを外部回路に接続する作用をなす上部及び下部接点を設立する。上部接点はTCM上に配置することができ、下部接点は基板の細長いナノ構造体とは反対側の表面上に配置するか、基板内に組み込むことができる。
一実施形態では、本発明は、本明細書中に開示されたような多重接合ナノ構造体に基づく光起電力デバイスの1以上を含み得るソーラーパネルに関する。ソーラーパネルは、各デバイスを周囲の大気環境から隔離するとともに電力の発生を可能にする。一実施形態では、光起電力デバイスは水平に装填することができ、こうすれば太陽を追跡する追跡システムの必要をなくすことができる。ソーラーパネルは、一実施形態では、集積発電システム(住宅用又は商業用)、消費者電子装置又はソーラー発電所に用いることができる。ソーラーパネルの作製は当業界でよく知られているので、ここでは簡潔のために詳細に説明しない。
105 多層膜
107 透明導電性材料
110 基板
115,120 基板表面
125 ナノ構造体
130 層
135 接点
140 トンネル接合
Claims (16)
- 2以上の表面(115,120)を有する基板(110)、
基板(110)の2以上の表面(115,120)の少なくとも1表面の少なくとも一部上に配置された多層膜(105)、
多層膜(105)上に配置された複数の細長いナノ構造体(125)及び
複数の細長いナノ構造体(125)上に配置された1以上の層(130)を備え、
複数の細長いナノ構造体(125)に接触する多層膜(105)の最上層が第1トンネル接合(140)層であり、
1以上の層(130)が光活性接合の一部である、
光起電力デバイス(100)。 - 前記多層膜(105)がさらに、多結晶層、単結晶層、非晶質層及び第2トンネル接合(140)層からなる群から選択される少なくとも1層を含む、請求項1記載の光起電力デバイス(100)。
- 前記多層膜(105)がさらに、p−ドープト層、n−ドープト層及び真性層からなる群から選択される少なくとも1層の要素を含む、請求項1記載の光起電力デバイス(100)。
- 前記多層膜(105)がドーパント濃度が厚さ方向に傾斜した単一層である、請求項1記載の光起電力デバイス(100)。
- 前記1以上の層(130)が複数の細長いナノ構造体(125)上にコンフォーマルに配置された、請求項1記載の光起電力デバイス(100)。
- 前記1以上の層(130)が、p−ドープト層、n−ドープト層、真性層及び第2トンネル接合(140)層からなる群から選択される少なくとも1層の要素を含む、請求項1記載の光起電力デバイス(100)。
- 前記1以上の層(130)がドーパント濃度が厚さ方向に傾斜した単一層である、請求項1記載の光起電力デバイス(100)。
- 前記1以上の層(130)が、非晶質シリコン、非晶質シリコン−ゲルマニウム(SiGe)、Ge、GaAs、InGaP及び非晶質シリコンカーバイド(SiC)の1種以上を含む、請求項1記載の光起電力デバイス(100)。
- 複数の細長いナノ構造体(125)がシリコンナノワイヤを含む、請求項1記載の光起電力デバイス(100)。
- ナノ多孔質テンプレート(145)が多層膜(105)上に配置された、請求項1記載の光起電力デバイス(100)。
- 複数の細長いナノ構造体(125)が光活性接合に組み込まれている、請求項1記載の光起電力デバイス(100)。
- 多層膜(105)、複数の細長いナノ構造体(125)及び1以上の層(130)が前記基板(110)の2以上の表面(115,120)に対して両面配列になっている、請求項1記載の光起電力デバイス(100)。
- さらに、前記1以上の層(130)上に配置された透明導電性材料(TCM)(107)を備える、請求項1記載の光起電力デバイス(100)。
- さらに、光起電力デバイス(100)を外部回路に接続する機能をなす上部及び下部接点(135)を備える、請求項13記載の光起電力デバイス(100)。
- 請求項1記載の光起電力デバイスを1以上備えるソーラーパネルであって、光起電力デバイスを周囲の大気環境から隔離するとともに電力の発生を可能にする、ソーラーパネル。
- 光起電力デバイスを太陽追跡システムとは独立な形態で装填できる、請求項15記載のソーラーパネル。
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US20080169017A1 (en) | 2008-07-17 |
US7977568B2 (en) | 2011-07-12 |
EP1944811A2 (en) | 2008-07-16 |
CN101221992A (zh) | 2008-07-16 |
CN101221992B (zh) | 2012-05-09 |
EP1944811A3 (en) | 2013-10-02 |
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