JP2016189383A - 光電変換素子およびその製造方法 - Google Patents
光電変換素子およびその製造方法 Download PDFInfo
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- JP2016189383A JP2016189383A JP2015068300A JP2015068300A JP2016189383A JP 2016189383 A JP2016189383 A JP 2016189383A JP 2015068300 A JP2015068300 A JP 2015068300A JP 2015068300 A JP2015068300 A JP 2015068300A JP 2016189383 A JP2016189383 A JP 2016189383A
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- photoelectric conversion
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
Description
R1−(CH2)n−R2 ……(1)
(式中、nは1〜20であり、R1、R2はそれぞれハロゲンまたはSHである。)
まず、実施形態の光電変換素子について説明する。
有機薄膜太陽電池10は、支持基板11を有する。支持基板11上には、一対の第1電極層12が形成されている。図中右側の第1電極層12上には、光電変換層13が形成されている。光電変換層13上には、第2電極層14が形成されている。第2電極層14は、図中左側の第1電極層12と電気的に接続されている。また、支持基板11上には、光電変換層13および第2電極層14を覆うようにして封止基板18が設けられている。封止基板18は、支持基板11上に接着層19により固定されている。
R1−(CH2)n−R2 ……(1)
(式中、nは1〜20であり、R1、R2はそれぞれハロゲンまたはSHである。)
実施形態の光電変換素子の製造方法は、特に有機活性層の製造に好適に用いられる。
R1−(CH2)n−R2 ……(1)
(式中、nは1〜20であり、R1、R2はそれぞれハロゲンまたはSHである。)
メニスカス法では、図2に示すようなメニスカス塗布装置20が用いられる。メニスカス塗布装置20は、例えば、板状のステージ21と、このステージ21に対向して配置される円柱状の塗布ヘッド22とを有し、塗布ヘッド22の位置が固定され、塗布ヘッド22に対してステージ21が水平方向に移動できるように構成されている。
なお、本発明はこれらの実施例に限定されない。
有機活性層の形成に用いる塗液を以下のように調製した。溶媒としてのモノクロロベンゼン 1.94mlに、式(1)で表される化合物としての1,8−ジヨードオクタン 0.06ml、p型半導体としてのポリマーであるPTB7([ポリ{4,8−ビス[(2−エチルヘキシル)オキシ]ベンゾ[1,2−b:4,5−b’]ジチオフェン−2,6−ジイル−lt−alt−3−フルオロ−2−[(2−エチルへキシル)カルボニル]チエノ[3,4−b]チオフェン−4,6−ジイル}]) 16mg、n型半導体としてのフラーレン誘導体であるPC70BM([6,6]フェニルC71ブチル酸メチルエスター) 24mgを加えた。これを80℃で20分間撹拌分散させた後、室温に戻して有機活性層の形成に用いる塗液とした。
実施例1と同様にして塗膜を有する基板を製造した。その後、20分間で圧力を15Paに低下させてから、被処理基板の温度が46℃になるまで10分間で加熱し、さらにこの温度で1分間維持して有機活性層を形成した。なお、有機活性層の厚さは実施例1と同様とした。その後、実施例1と同様にして有機薄膜太陽電池の製造および評価を行った。
実施例1と同様にして塗膜を有する基板を製造した。その後、20分間で圧力を15Paに低下させてから、被処理基板の温度が150℃になるまで10分間で加熱し、さらにこの温度で1分間維持して有機活性層を形成した。なお、有機活性層の厚さは実施例1と同様とした。その後、実施例1と同様にして有機薄膜太陽電池の製造および評価を行った。
実施例1と同様にして塗膜を有する基板を製造した。その後、常圧で、被処理基板の温度が70℃になるまで20秒間で加熱し、さらにこの温度で30分間維持して有機活性層を形成した。なお、有機活性層の厚さは実施例1と同様とした。その後、実施例1と同様にして有機薄膜太陽電池の製造および評価を行った。
実施例1と同様にして塗膜を有する基板を製造した。その後、実施例1と同様にして圧力を5×10−5Paに低下させてから、被処理基板の温度が30℃になるまで10分間で加熱し、さらにこの温度で1分間維持して有機活性層を形成した。なお、有機活性層の厚さは実施例1と同様とした。その後、実施例1と同様にして有機薄膜太陽電池の製造および評価を行った。
実施例1と同様にして塗膜を有する基板を製造した。その後、20分間で圧力を15Paに低下させてから、被処理基板の温度が39℃になるまで10分間で加熱し、さらにこの温度で1分間維持して有機活性層を形成した。なお、有機活性層の厚さは実施例1と同様とした。その後、実施例1と同様にして有機薄膜太陽電池の製造および評価を行った。
R1−(CH2)n−R2 ……(1)
(式中、nは1〜20であり、R1、R2はそれぞれハロゲンまたはSHである。)
Claims (7)
- p型半導体、n型半導体、および下記式(1)で表される化合物を含む塗液を基板上に塗布する塗布工程と、
R1−(CH2)n−R2 ……(1)
(式中、nは1〜20であり、R1、R2はそれぞれハロゲンまたはSHである。)
100Pa以下の圧力、かつ前記基板の温度が40〜200℃となる条件で、前記基板上の前記塗液を乾燥させる乾燥工程と、
を有することを特徴とする光電変換素子の製造方法。 - 前記乾燥工程は、1×10−3Pa以下の圧力、かつ前記基板の温度が40〜160℃となる条件で行うことを特徴とする請求項1記載の光電変換素子の製造方法。
- 前記p型半導体がポリマーからなり、かつ前記n型半導体がフラーレン誘導体からなるバルクヘテロ型の有機薄膜太陽電池の製造に用いられることを特徴とする請求項1または2記載の光電変換素子の製造方法。
- 前記式(1)で表される化合物が1、8−ジヨードオクタンであることを特徴とする請求項1乃至3のいずれか1項記載の光電変換素子の製造方法。
- 第1電極層と、
第2電極層と、
前記第1電極層と前記第2電極層との間に配置され、p型半導体、n型半導体、および下記式(1)で表される化合物を含み、前記式(1)で表される化合物の濃度が0.001質量%以上0.1質量%未満である有機活性層を有する光電変換層と、
R1−(CH2)n−R2 ……(1)
(式中、nは1〜20であり、R1、R2はそれぞれハロゲンまたはSHである。)
を有する光電変換素子。 - 前記p型半導体がポリマーからなり、前記n型半導体がフラーレン誘導体からなるバルクヘテロ型の有機薄膜太陽電池であることを特徴とする請求項5記載の光電変換素子。
- 前記式(1)で表される化合物が1、8−ジヨードオクタンであることを特徴とする請求項5または6記載の光電変換素子。
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