JP2013156585A5 - - Google Patents

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JP2013156585A5
JP2013156585A5 JP2012019111A JP2012019111A JP2013156585A5 JP 2013156585 A5 JP2013156585 A5 JP 2013156585A5 JP 2012019111 A JP2012019111 A JP 2012019111A JP 2012019111 A JP2012019111 A JP 2012019111A JP 2013156585 A5 JP2013156585 A5 JP 2013156585A5
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板状の本体内に該本体とは屈折率が異なる異屈折率領域が、該本体に平行な２次元格子の各格子点に配置されて成る２次元フォトニック結晶であって、
各異屈折率領域が、前記２次元格子の各格子点から前記２次元格子面に平行に、最大ずれ量Δpmax（≠0）以下のずれ量Δpだけランダムにずれて配置されている
ことを特徴とする２次元フォトニック結晶。 A two-dimensional photonic crystal in which a different refractive index region having a refractive index different from that of the main body is arranged in each lattice point of a two-dimensional lattice parallel to the main body in a plate-shaped main body,
Each of the different refractive index regions is arranged at random from the respective lattice points of the two-dimensional grating in parallel with the two-dimensional lattice plane by a deviation amount Δp that is equal to or less than a maximum deviation amount Δp max (≠ 0). Characteristic two-dimensional photonic crystal. 前記最大ずれ量Δpmaxが２次元格子の周期長の1/2以下であることを特徴とする請求項１に記載の２次元フォトニック結晶。 2. The two-dimensional photonic crystal according to claim 1, wherein the maximum shift amount Δp max is not more than ½ of a periodic length of a two-dimensional grating. 前記ずれ量Δpが0から最大ずれ量Δpmaxの間で一様に分布しており、その方向についても一様に分布していることを特徴とする請求項１又は２に記載の２次元フォトニック結晶。 3. The two-dimensional photo according to claim 1, wherein the deviation amount Δp is uniformly distributed between 0 and a maximum deviation amount Δp max and is also uniformly distributed in the direction thereof. Nick crystal. 板状の本体内に該本体とは屈折率が異なる異屈折率領域が、該本体に平行な２次元格子の各格子点に配置されて成る２次元フォトニック結晶であって、
前記２次元格子の連接する複数個の格子点から成る超格子を単位格子とする超格子構造を備え、
各超格子において、
a) 予め定められた1個又は複数個の格子点において、各格子点から該２次元格子の格子面に平行に、第１最大ずれ量Δp1max（≠0）以下のずれ量Δpだけランダムにずれて配置された第１異屈折率領域と、
b) 前記第１異屈折率領域が配置された格子点以外の格子点において、各格子点から該２次元格子の格子面に平行に、第２最大ずれ量Δp2max以下のずれ量Δpだけランダムにずれて配置された第２異屈折率領域と
が存在することを特徴とする２次元フォトニック結晶。 A two-dimensional photonic crystal in which a different refractive index region having a refractive index different from that of the main body is arranged in each lattice point of a two-dimensional lattice parallel to the main body in a plate-shaped main body,
A superlattice structure having a superlattice composed of a plurality of lattice points connected to the two-dimensional lattice as a unit lattice;
In each superlattice
a) At one or a plurality of predetermined grid points, a random shift amount Δp equal to or less than the first maximum shift amount Δp1 max (≠ 0) is randomly generated from each lattice point in parallel with the lattice plane of the two-dimensional lattice. A first different refractive index region that is offset,
b) At lattice points other than the lattice point at which the first different refractive index region is arranged, a random deviation amount Δp equal to or less than the second maximum deviation amount Δp2 max is parallel to the lattice plane of the two-dimensional lattice from each lattice point A two-dimensional photonic crystal characterized in that there is a second different refractive index region arranged so as to be shifted. 前記第２最大ずれ量Δp2maxが0であることを特徴とする請求項４に記載の２次元フォトニック結晶。 5. The two-dimensional photonic crystal according to claim 4, wherein the second maximum deviation amount Δp <b> 2 max is 0. 6. 全ての前記第２異屈折率領域のずれ量Δpが0から前記第２最大ずれ量Δp2maxの間で一様に分布しており、その方向についても一様に分布していることを特徴とする請求項４に記載の２次元フォトニック結晶。 The deviation amount Δp of all the second different refractive index regions is uniformly distributed between 0 and the second maximum deviation amount Δp2 max , and the direction is also uniformly distributed. The two-dimensional photonic crystal according to claim 4. 全ての前記第１異屈折率領域のずれ量Δpが0から前記第１最大ずれ量Δp1maxの間で一様に分布しており、その方向についても一様に分布していることを特徴とする請求項４〜６のいずれかに記載の２次元フォトニック結晶。 The deviation amount Δp of all the first different refractive index regions is uniformly distributed between 0 and the first maximum deviation amount Δp1 max , and the direction is also uniformly distributed. The two-dimensional photonic crystal according to any one of claims 4 to 6. 板状の本体内に該本体とは屈折率が異なる異屈折率領域が、該本体に平行な２次元格子の各格子点に配置されて成る２次元フォトニック結晶であって、
前記２次元格子の連接する複数個の格子点から成る超格子を単位格子とする超格子構造を備え、
各超格子において格子点がn個の部分集合に分割され、各部分集合において前記異屈折率領域が各格子点から前記２次元格子の格子面に平行に、最大ずれ量Δpkmax（kは1〜nのいずれかの整数。少なくとも１つの部分集合においてΔpkmax≠0。）以下のずれ量Δpだけランダムにずれて配置されていることを特徴とする２次元フォトニック結晶。 A two-dimensional photonic crystal in which a different refractive index region having a refractive index different from that of the main body is arranged in each lattice point of a two-dimensional lattice parallel to the main body in a plate-shaped main body,
A superlattice structure having a superlattice composed of a plurality of lattice points connected to the two-dimensional lattice as a unit lattice;
In each superlattice, the lattice point is divided into n subsets, and in each subset, the different refractive index region is parallel to the lattice plane of the two-dimensional lattice from each lattice point, and the maximum deviation amount Δpk max (k is 1 A two-dimensional photonic crystal characterized by being randomly shifted by an amount of shift Δp equal to or less than Δpk max ≠ 0 in at least one subset. 前記部分集合のうちの１つにおいて、最大ずれ量Δpnmaxが0であることを特徴とする請求項８に記載の２次元フォトニック結晶。 9. The two-dimensional photonic crystal according to claim 8 , wherein, in one of the subsets, a maximum deviation amount Δpn max is zero. 前記各部分集合のうちの１つ又は複数において、該部分集合に属する全ての異屈折率領域のずれ量Δpが0から前記最大ずれ量Δpnmaxの間で一様に分布していることを特徴とする請求項８又は９に記載の２次元フォトニック結晶。 In one or more of each of the subsets, the shift amount Δp of all the different refractive index regions belonging to the subset is uniformly distributed between 0 and the maximum shift amount Δpn max. The two-dimensional photonic crystal according to claim 8 or 9 . さらに、各異屈折率領域のうちの少なくとも一部において、前記異屈折率領域の平面形状が最小値と該最小値よりも大きい最大値の間でランダムな大きさを有することを特徴とする請求項１〜１０のいずれかに記載の２次元フォトニック結晶。   Further, in at least a part of each of the different refractive index regions, the planar shape of the different refractive index region has a random size between a minimum value and a maximum value larger than the minimum value. Item 11. A two-dimensional photonic crystal according to any one of Items 1 to 10. 板状の本体内に該本体とは屈折率が異なる異屈折率領域が、該本体に平行な２次元格子の各格子点に配置されて成る２次元フォトニック結晶であって、
各異屈折率領域の平面形状が、最小値と該最小値よりも大きい最大値の間でランダムな大きさを有する
ことを特徴とする２次元フォトニック結晶。 A two-dimensional photonic crystal in which a different refractive index region having a refractive index different from that of the main body is arranged in each lattice point of a two-dimensional lattice parallel to the main body in a plate-shaped main body,
A two-dimensional photonic crystal, wherein a planar shape of each different refractive index region has a random size between a minimum value and a maximum value larger than the minimum value. 各異屈折率領域が同一の平面形状を有することを特徴とする請求項１２に記載の２次元フォトニック結晶。   The two-dimensional photonic crystal according to claim 12, wherein the different refractive index regions have the same planar shape. 個々の異屈折率領域における平面形状の大きさの、全ての異屈折率領域における分布が、前記最小値から前記最大値の間で一様に分布していることを特徴とする請求項１２又は１３に記載の２次元フォトニック結晶。   The distribution of the size of the planar shape in each different refractive index region in all the different refractive index regions is uniformly distributed between the minimum value and the maximum value. 14. A two-dimensional photonic crystal according to item 13. 板状の本体内に該本体とは屈折率が異なる異屈折率領域が、該本体に平行な２次元格子の各格子点に配置されて成る２次元フォトニック結晶であって、
前記２次元格子の連接する複数個の格子点から成る超格子を単位格子とする超格子構造を備え、
各超格子において、
a) 予め定められた1個又は複数個の格子点に配置された第１の異屈折率領域であって、平面形状が第１の最小値と該第１の最小値よりも大きい第１の最大値の間でランダムな大きさを有する第１異屈折率領域と、
b) 前記第１異屈折率領域が配置された格子点以外の格子点に配置された第２の異屈折率領域であって、平面形状が第２の最小値と第２の最大値の間でランダムな大きさを有する第２異屈折率領域と
が存在することを特徴とする２次元フォトニック結晶。 A two-dimensional photonic crystal in which a different refractive index region having a refractive index different from that of the main body is arranged in each lattice point of a two-dimensional lattice parallel to the main body in a plate-shaped main body,
A superlattice structure having a superlattice composed of a plurality of lattice points connected to the two-dimensional lattice as a unit lattice;
In each superlattice
a) a first different refractive index region arranged at one or more predetermined lattice points, the first minimum value and the first minimum value being larger than the first minimum value A first refractive index region having a random size between the maximum values;
b) a second different refractive index region disposed at a lattice point other than the lattice point at which the first different refractive index region is disposed, wherein the planar shape is between the second minimum value and the second maximum value. And a second different refractive index region having a random size and a two-dimensional photonic crystal. 各第１異屈折率領域及び各第２異屈折率領域が同一の平面形状を有することを特徴とする請求項１５に記載の２次元フォトニック結晶。   The two-dimensional photonic crystal according to claim 15, wherein each first different refractive index region and each second different refractive index region have the same planar shape. 全ての前記第２異屈折率領域の平面形状の大きさが同じであることを特徴とする請求項１５又は１６に記載の２次元フォトニック結晶。   The two-dimensional photonic crystal according to claim 15 or 16, wherein all the second different refractive index regions have the same planar shape. 全ての前記第２異屈折率領域の平面形状の大きさが前記第２の最小値から前記第２の最大値の間で一様に分布していることを特徴とする請求項１５又は１６に記載の２次元フォトニック結晶。   The size of the planar shape of all the second different refractive index regions is uniformly distributed between the second minimum value and the second maximum value. The two-dimensional photonic crystal described. 全ての前記第１異屈折率領域の平面形状の大きさが前記第１の最小値から前記第１の最大値の間で一様に分布していることを特徴とする請求項１５〜１８のいずれかに記載の２次元フォトニック結晶。   The size of the planar shape of all the first different refractive index regions is uniformly distributed between the first minimum value and the first maximum value. The two-dimensional photonic crystal according to any one of the above. 板状の本体内に該本体とは屈折率が異なる異屈折率領域が、該本体に平行な２次元格子の各格子点に配置されて成る２次元フォトニック結晶であって、
前記２次元格子の連接する複数個の格子点から成る超格子を単位格子とする超格子構造を備え、
各超格子において格子点がn個の部分集合に分割され、各部分集合において前記異屈折率領域の平面形状の大きさが最小値と最大値（少なくとも１つの部分集合において最小値と最大値が異なる値を有する）の間でランダムな大きさを有することを特徴とする２次元フォトニック結晶。 A two-dimensional photonic crystal in which a different refractive index region having a refractive index different from that of the main body is arranged in each lattice point of a two-dimensional lattice parallel to the main body in a plate-shaped main body,
A superlattice structure having a superlattice composed of a plurality of lattice points connected to the two-dimensional lattice as a unit lattice;
In each superlattice, the lattice point is divided into n subsets, and in each subset, the size of the planar shape of the different refractive index region is the minimum value and the maximum value (the minimum value and the maximum value in at least one subset are A two-dimensional photonic crystal having a random size between (having different values). 各異屈折率領域が同一の平面形状を有することを特徴とする請求項２０に記載の２次元フォトニック結晶。   21. The two-dimensional photonic crystal according to claim 20, wherein the different refractive index regions have the same planar shape. 前記部分集合のうちの１つにおいて、前記異屈折率領域の平面形状が同じ大きさを有することを特徴とする請求項２０又は２１に記載の２次元フォトニック結晶。   The two-dimensional photonic crystal according to claim 20 or 21, wherein in one of the subsets, the planar shapes of the different refractive index regions have the same size. 前記部分集合のうちの１つ又は複数において、該部分集合に属する全ての異屈折率領域の大きさが前記最小値から前記最大値の間で一様に分布していることを特徴とする請求項２０〜２２のいずれかに記載の２次元フォトニック結晶。   The size of all the different refractive index regions belonging to the subset in one or more of the subsets is uniformly distributed between the minimum value and the maximum value. Item 23. The two-dimensional photonic crystal according to any one of Items 20 to 22. さらに、各異屈折率領域のうちの少なくとも一部において、前記異屈折率領域が、前記２次元格子の各格子点から前記２次元格子面に平行に、最大ずれ量Δpmax（≠0）以下のずれ量Δpだけランダムにずれて配置されていることを特徴とする請求項１２〜２３のいずれかに記載の２次元フォトニック結晶。 Further, in at least a part of each of the different refractive index regions, the different refractive index region is parallel to the two-dimensional lattice plane from each lattice point of the two-dimensional lattice and is equal to or less than a maximum deviation amount Δp max (≠ 0). The two-dimensional photonic crystal according to any one of claims 12 to 23, wherein the two-dimensional photonic crystals are arranged so as to be randomly shifted by a shift amount Δp. 請求項１〜２４のいずれかに記載の２次元フォトニック結晶の結晶構造が形成された光電変換層を備えることを特徴とする光センサ。   An optical sensor comprising a photoelectric conversion layer in which the crystal structure of the two-dimensional photonic crystal according to claim 1 is formed. 前記光電変換層が、p型半導体又はn型半導体から成り前記１対の電極のいずれか一方の電極に接する第１層と、該第１層とは逆極性の半導体から成る第２層を含む積層構造を有し、
前記異屈折率領域が前記光電変換層の厚さ方向に、前記第１層の前記一方の電極との界面から前記第２層よりも手前まで形成されており、
前記異屈折率領域の材料が前記一方の電極の材料から成る
ことを特徴とする請求項２５に記載の光センサ。 The photoelectric conversion layer includes a first layer made of a p-type semiconductor or an n-type semiconductor and in contact with one of the pair of electrodes, and a second layer made of a semiconductor having a polarity opposite to the first layer. Having a laminated structure,
The different refractive index region is formed from the interface with the one electrode of the first layer to the front of the second layer in the thickness direction of the photoelectric conversion layer,
26. The optical sensor according to claim 25, wherein the material of the different refractive index region is made of the material of the one electrode. 前記光電変換層がSiの単結晶若しくは多結晶の薄膜、又はCu(In,Ga)Se2の多結晶の薄膜であることを特徴とする請求項２５又は２６に記載の光センサ。 27. The optical sensor according to claim 25, wherein the photoelectric conversion layer is a Si single crystal or polycrystal thin film, or a Cu (In, Ga) Se2 polycrystal thin film.
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