PEDOT IN PEROVSKITE SOLAR CELL

• Main Authors: STEFAN SCHUMANN, JAN SEURING, ARMIN SAUTTER, SAUER RUDIGER, NINA KAUSCH-BUSIES, ELSCHNER ANDREAS, WILFRIED LOEVENICH
• Format: Patent
• Language: English; Japanese
• Published: 07.01.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a process of making a hole transporting material that reduces resistance loss and parasitic light absorption, and a layer including the hole transporting material, a dispersion, and a photovoltaic device.SOLUTION: There are provided a dispersion that includes a) salt or complex of cationic polythiophene and counterion, b) an organic solvent having a dielectric constant of 1×10-30 to 20×10-30 Cm, and c) an additive selected from the group of metal nanowires, carbon nanotubes, graphene, and crosslinkers, a conductive layer formed by using the dispersion, a photovoltaic device including the conductive layer, and a manufacturing process thereof. The manufacturing process includes I) a step of providing a photoactive layer including a perovskite-type crystal structure, II) a step of superimposing a coating composition A) containing a conductive polymer a) and an organic solvent b) on the photoactive layer, and III) a step of removing the organic solvent b) from the coating composition A) superimposed in step II) to obtain a conductive layer.SELECTED DRAWING: Figure 1 【課題】抵抗損失及び寄生光吸収を軽減する正孔輸送材料及び、正孔輸送材料を含む層状体、分散物、光起電力デバイス、を作製するためのプロセスを提供する。【解決手段】ａ）塩、又はカチオンポリチオフェンと対イオンとの複合体と、ｂ）１×１０−３０〜２０×１０−３０Ｃｍの誘電率を有する有機溶媒と、ｃ）金属ナノワイヤ、カーボンナノチューブ、グラフェン、及び架橋剤の群から選択される添加物と、を含む、分散物、及び、分散物を用いて形成された導電層、及び、導電層を含む光起電力デバイス及びその製造プロセス。製造プロセスはＩ）ペロブスカイト型結晶構造を含む光活性層を提供する工程と、ＩＩ）導電性ポリマーａ）及び有機溶媒ｂ）を含むコーティング組成物Ａ）で光活性層を重畳する工程と、ＩＩＩ）工程ＩＩ）において重畳されたコーティング組成物Ａ）から有機溶媒ｂ）除去し、導電層を得る工程を含む。【選択図】図１