JP5276972B2 - 光電変換素子 - Google Patents
光電変換素子 Download PDFInfo
- Publication number
- JP5276972B2 JP5276972B2 JP2008326803A JP2008326803A JP5276972B2 JP 5276972 B2 JP5276972 B2 JP 5276972B2 JP 2008326803 A JP2008326803 A JP 2008326803A JP 2008326803 A JP2008326803 A JP 2008326803A JP 5276972 B2 JP5276972 B2 JP 5276972B2
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- Prior art keywords
- layer
- photoelectric conversion
- type semiconductor
- thin film
- organic thin
- Prior art date
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/30—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
- H10K30/353—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains comprising blocking layers, e.g. exciton blocking layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/50—Photovoltaic [PV] devices
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Photovoltaic Devices (AREA)
Description
次に、図1を用いて本発明の実施例を説明する。基板電極としては、透明導電体膜1であるITO(酸化インジウムスズ)薄膜が堆積された透光性ガラス基板(以下、ITO基板)を用いた。ITO基板を、アセトン,エタノール溶液を用いて各10−15分間の超音波洗浄を行った。その後、純水又は超純水にて洗浄し、窒素ガスにて乾燥した。
実施例2では、実施例1で説明した光電変換層と対極電極との間に積層された正孔防止層5の厚みを20nmに調整した有機薄膜太陽電池素子を作製した。作製方法は実施例1と同様である。
実施例1において光電変換層の上に直接電極を形成し、図2に示したような正孔防止層5が積層されていない構造の有機薄膜太陽電池を作製した。
実施例1において正孔防止層5に代えて誘電体のLiFを用いて、図3に示したような有機薄膜太陽電池を作製した。誘電体の堆積は抵抗加熱真空蒸着法により行い、LiF膜厚は0.5nmとした。
実施例1において、光電変換層8と、対極電極6の間に積層されている正孔防止層5の厚みを50nmとした以外は、実施例1と同様の手法で有機薄膜太陽電池を作製した。
上記のようにして作製した実施例1〜2及び比較例1〜3のバルクへテロ接合型有機薄膜太陽電池に、ソーラシミュレータにより擬似太陽光(AM1.5)を照射して、出力特性を測定・評価した。得られた結果を表1,表2に示す。
2 電子防止層
3 p型半導体ポリマーまたはp型半導体分子を含む正孔輸送層
4 n型半導体分子を含む電子輸送層
5 電極酸化膜による正孔防止層
6 対極電極
7 絶縁体層または誘電体層
8 光電変換層
Claims (4)
- 透明導電体層と、該透明導電体層上に配置された電子防止層と、該電子防止層上に配置された光電変換層と、該光電変換層上に配置された正孔防止層と、該正孔防止層上に配置された対極電極を具備し、前記光電変換層がp型半導体分子またはp型半導体ポリマーとn型半導体分子が混在した層で構成された有機薄膜光電変換素子であって、
前記対極電極はアルミニウムであり、前記正孔防止層は前記対極電極の酸化物である厚みが0.1nm以上20nm以下の酸化アルミニウム膜であることを特徴とする有機薄膜光電変換素子。 - 請求項1に記載の有機薄膜光電変換素子において、前記正孔防止層が前記対極電極での正孔と電子の再結合を防止する機能を有することを特徴とする有機薄膜光電変換素子。
- 請求項1に記載の有機薄膜光電変換素子において、前記正孔防止層の荷電子帯準位は、真空準位を基準とした時、前記光電変換層中に含まれるp型半導体ポリマーまたはp型半導体分子の荷電子帯準位よりも0.3eV以上深い箇所に位置するエネルギー準位を有することを特徴とする有機薄膜光電変換素子。
- 請求項1に記載の有機薄膜光電変換素子において、前記正孔防止層の伝導帯準位は、前記光電変換層中に含まれるn型半導体分子の伝導帯準位よりも深い箇所に位置するエネルギー準位を有し、その差が0.5eV未満であることを特徴とする有機薄膜光電変換素子。
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US13/139,094 US20110259409A1 (en) | 2008-12-24 | 2009-12-18 | Photovoltaic Device |
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WO2011127475A1 (en) * | 2010-04-09 | 2011-10-13 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Organic photovoltaic devices comprising solution- processed substituted metal-phthalocyanines and exhibiting near-ir photo-sensitivity |
KR101133973B1 (ko) | 2011-02-16 | 2012-04-09 | 경희대학교 산학협력단 | 유기 태양전지 소자 및 그 제조방법 |
JP2014150081A (ja) * | 2011-05-24 | 2014-08-21 | Panasonic Corp | 有機発電素子 |
CN103165742B (zh) * | 2011-12-16 | 2016-06-08 | 清华大学 | 太阳能电池的制备方法 |
FR2991505B1 (fr) * | 2012-06-05 | 2016-12-16 | Commissariat Energie Atomique | Procede de realisation d'un empilement du type premiere electrode/couche active/deuxieme electrode. |
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