JP7349096B2 - 有機単結晶半導体構造及びその製造方法 - Google Patents
有機単結晶半導体構造及びその製造方法 Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
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Description
さらに、前記線形要素の厚さの高さが均一である(highly uniform thickness)。
さらに、前記有機絶縁膜の材料は、共役系を有する材料であり、前記共役系とは共役結合πを形成できる系である。
さらに、前記有機絶縁膜の材料の誘電率が≦20であり、好ましくは、前記誘電率が≦12である。
さらに、前記電界効果トランジスタは、バッファ層及び/又はカプセル化層をさらに含む。
本発明の第5の目的は有機単結晶半導体構造の製造方法を提供することである。前記方法は、
2)有機半導体材料を有機溶媒に溶解して有機半導体溶液を調製するステップと、
5)ステップ2)で調製された有機半導体溶液をステップ4)で作られた空間に充填し、充填が完了された後に1~30s秒間静置するステップと、
例えば、熱処理により、得られた有機半導体単結晶薄膜を高温ステージに置き、一定時間及び一定温度の熱処理により、残りの溶媒分子を除去する。
前記電界効果トランジスタの製造方法は、前記有機単結晶半導体構造の製造方法において、ゲート及びゲート絶縁層の作製ステップをさらに含む。
1)技術的偏見を克服して、電極を交差して均一に成長した形態の有機半導体単結晶薄膜を、ボトムコンタクト型構造の成長界面上で初めて取得する。
6)有機半導体単結晶薄膜のその場での無制限の成長は、任意の形状及び任意のサイズのボトムコンタクト型基板上で実現される。
有機半導体単結晶薄膜の形態を特徴づけるために、光学顕微鏡を使用して管観測する。本発明によって提供される有機半導体単結晶薄膜の品質を特徴づけるために、本発明によって提供される有機半導体構造に基づいて、ボトムコンタクト型構造の電界効果トランジスタを作製し、半導体パラメータアナライザでその電界効果の電気的性能をテストする。
(3)成長環境の温度を20±1℃に、湿度を40±2%に制御する。
実施例8:ルブレン(Rubrene)に基づくボトムコンタクト型有機単結晶半導体構造及び製造方法。
実施例22:ペリレン(Perylene)に基づくボトムコンタクト型有機単結晶半導体構造及びその製造方法。
実施例23:9,10-ジフェニルアントラセン(9,10-DPA)に基づくボトムコンタクト型有機単結晶半導体構造及びその製造方法。
(1)厚さ200μmのPEN基板を取り、高真空下で熱蒸着法により、厚さ約30nmの長いストリップのAuを堆積させてソースドレイン電極とする。
(2)成長環境の温度を25±1℃に、湿度を50±2%に制御する。
比較例1の構造及びデバイス性能特徴付け方法は実施例1の方法と同じである。
(3)成長環境の温度を25±1℃に、湿度を50±2%に制御する。
比較例2の構造及びデバイス性能特徴付け方法は実施例1の方法と同じである。
(2)成長環境の温度を20±1℃に、湿度を50±2%に制御する。
比較例3の構造及びデバイス性能特徴付け方法は実施例1の方法と同じである。
比較例5の有機単結晶半導体構造製造方法について、実施例1のステップ(1-6)を参照し、配合物及びプロセスパラメータを表1及び表2に示す。
構造特徴付け方法は実施例1の方法と同じである。
(1)厚さ575mのP型の高ドープされた<100>シリコンウェーハを取り、シリコンウェーハ上に300nmの厚さの二酸化ケイ素絶縁層がある。
(3)成長環境の温度を25±1℃に、湿度を40±2%に制御する。
比較例10の構造及びデバイス性能特徴付け方法は実施例1の方法と同じである。
(2)ステップ(1)で作製された有機半導体単結晶薄膜にPDMS薄膜を注ぎ、60℃で2h焼き、12h静置する
比較例11の構造及びデバイス性能特徴付け方法は実施例1の方法と同じである。
トップゲート-ボトムコンタクト型有機単結晶半導体デバイスの利点と実用性について説明する。
比較例5~8では、薄膜が全く得られないが、溶質の蓄積点が少ないため、半導体デバイスを製造することができない。
**実際に使用されるプロセスパラメータ(せん断温度及びせん断線速度を含む)と表に示されているパラメータは±2%の偏差が許容される。
**実際に使用されるプロセスパラメータ(静置時間、環境温度、環境湿度、間隔を含む)と表に示されているパラメータは±2%の偏差が許容される。
**実際に得られた接触角CAwaterパラメータと表1に示されている検出により得られたパラメータは、±3%の偏差が許容される。
Claims (2)
- 有機単結晶半導体構造の製造方法であって、
1)基板上に補助成長層及び一対の電極を順次作製するステップであって、前記電極の下面を前記補助成長層の上面に接触させるか、または、前記電極の下部を前記補助成長層に半分埋め込ませるか、または、前記電極に前記補助成長層を貫通させて前記電極の下面を前記基板に到達させるか、により前記電極を前記補助成長層と接触させるステップと、
2)有機半導体材料を有機溶媒に溶解して有機半導体溶液を調製するステップと、
3)成長環境の温度及び湿度を制御して、成長環境を取得するステップであって、前記成長環境の温度は、偏差≦±2°Cであり、前記成長環境の湿度は、偏差≦±3%であり、前記成長環境の温度は、20℃~25℃であり、前記成長環境の湿度は、55%以下であるステップと、
4)せん断ツールとステップ1)で作製された基板との間の間隔を調整するステップであって、前記間隔は、50μm~300μmであり、且つせん断ツールの下面と基板との間の間隔は、偏差≦10μmであることを保証し、安定した溶液貯留空間を作り、前記溶液貯留空間がせん断ツールの下面と基板との間に形成された空間であるステップと、
5)ステップ2)で調製された有機半導体溶液をステップ4)で作られた空間に充填し、充填が完了した後に1~30秒間静置するステップと、
6)前記有機半導体溶液を、前記電極を横断する前の前記補助成長層の上面から前記電極の上面を横断し、横断後の前記補助成長層まで一定の方向に沿って一定のせん断温度において、一定の線速度でせん断することにより、前記基板上に線形の単結晶である線形要素が複数並んだ有機半導体単結晶薄膜を作製し、前記有機半導体単結晶薄膜が有機半導体単結晶アレイを構成し、前記有機半導体単結晶アレイの形態が前記電極を横断する前の前記補助成長層の上面、前記電極のエッジ部、電極の中央部上、及び前記電極を横断した後の前記補助成長層の上面で、基本的に変化なく、前記一定のせん断温度は基板及び溶液貯留空間の所在する空間において、温度は、偏差≦±1°Cであり、前記一定の線速度とは、前記線速度が偏差≦±20μm/sであるステップと
を含むことを特徴とする有機単結晶半導体構造の製造方法。 - ステップ6)の後に前記有機半導体単結晶薄膜を処理するステップをさらに含み、前記処理するステップは、熱処理、真空処理、溶媒アニーリング処理及び表面処理のうちのいずれか1つ又は複数から選択され、前記表面処理は、紫外線オゾン処理、プラズマ衝撃、赤外線処理及びレーザーエッチングのうちのいずれか1つ又は複数から選択されることを特徴とする請求項1に記載の有機単結晶半導体構造の製造方法。
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