{"product_id":"patpa","title":"PATPA","description":"\u003ch2 id=\"product-oneliner\"\u003eSelf-Assembled Monolayer (SAM) Molecule for High Efficiency Perovskite Solar Cells\u003c\/h2\u003e\n\u003cp class=\"text-center\"\u003eHole transport layer for NFA-polymer solar cells and \u003cem\u003ep-i-n\u003c\/em\u003e perovskite solar cells, PATPA, CAS No. 136905-60-7, (4-(diphenylamino)phenyl)phosphonic acid, hole selection layer (HSL), charge transport layer\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"text-center\"\u003e\u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e | \u003ca href=\"#specifications\"\u003eProduct Information\u003c\/a\u003e | \u003ca href=\"#msds\"\u003eMSDS\u003c\/a\u003e | \u003ca href=\"#literature\"\u003eLiterature\u003c\/a\u003e | \u003ca href=\"#related-products\"\u003eRelated Products\u003c\/a\u003e | \u003ca href=\"#technical-support\"\u003eTechnical Support\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eFeaturing a rigid phenyl linking group with a phosphonic acid anchor and a diphenylamine terminal, PATPA is a high-performance self-assembled monolayer materials for perovskite solar cells. As a hole selection layer (HSL) on ITO in the inverted \u003cem\u003ep-i-n\u003c\/em\u003e structure perovskite solar cell, PATPA is designed to enhance interfacial contact and improve the quality of perovskite films. The rigid phenyl linker enables a dense molecular packing that minimizes interfacial defects and reduces charge recombination, outperforming more flexible alternatives like \u003ca rel=\"noopener\" title=\"2patpa\" href=\"https:\/\/doi.org\/10.1038\/s41467-025-62388-4\" target=\"_blank\"\u003e2PATPA\u003c\/a\u003e with flexible linking group and \u003ca href=\"https:\/\/www.ossila.com\/products\/me-phppacz\" title=\"me-phppacz\" rel=\"noopener\" target=\"_blank\"\u003ePhpPACz\u003c\/a\u003e with more rigid terminal carbazole group.\u003c\/p\u003e\n\u003cp\u003ePerovskite solar cell device based on PATPA as the hole transport layer (HTL) has achieved a power conversion efficiency (PCE) of over 26.21% with enhanced stability, retaining up to 91% of their initial efficiency after 1000 hours of light exposure.\u003c\/p\u003e\n\u003cp\u003eServing as hole selective contact for organic solar cells and perovskite solar cells, PATPA is an alternative to \u003ca href=\"https:\/\/www.ossila.com\/collections\/pedot\" title=\"pedot:pss\" rel=\"noopener\" target=\"_blank\"\u003ePEDOT:PSS\u003c\/a\u003e with superior performance and the convenience of solution deposition at low concentration, i.e. 1 mM.\u003c\/p\u003e\n\u003ch2 id=\"specifications\"\u003eGeneral Information\u003c\/h2\u003e\n\u003chr\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eCAS Number\u003c\/th\u003e\n\u003ctd\u003e136905-60-7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eChemical Formula\u003c\/th\u003e\n\u003ctd\u003eC\u003csub\u003e18\u003c\/sub\u003eH\u003csub\u003e16\u003c\/sub\u003eNO\u003csub\u003e3\u003c\/sub\u003eP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eMolecular Weight\u003c\/th\u003e\n\u003ctd\u003e325.30 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eAbsorption*\u003c\/th\u003e\n\u003ctd\u003eλ\u003csub\u003emax\u003c\/sub\u003e 303 nm (in solution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eFluorescence\u003c\/th\u003e\n\u003ctd\u003eλ\u003csub\u003eem\u003c\/sub\u003e (n.a.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eHOMO\/LUMO\u003c\/th\u003e\n\u003ctd\u003eHOMO = -5.32 eV, LUMO = -2.06 eV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eSynonyms\u003c\/th\u003e\n\u003ctd\u003e(4-(Diphenylamino)phenyl)phosphonic acid, Phosphonic acid, \u003cem\u003ep\u003c\/em\u003e-[4-(diphenylamino)phenyl]-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eClassification or Family\u003c\/th\u003e\n\u003ctd\u003eTriphenyl amines, Self-assembly monolayers, Hole transport layer, Hole selection layer,\u003cem\u003e p-i-n\u003c\/em\u003e Perovskite solar cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003chr\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003ePurity\u003c\/th\u003e\n\u003ctd\u003e\u0026gt; 98% (HPLC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eMelting Point\u003c\/th\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eAppearance\u003c\/th\u003e\n\u003ctd\u003eWhite to off-white powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"panel panel-default\"\u003e\n\u003cdiv class=\"panel-body\"\u003e\n\u003ch3\u003eSolution Processing Procedure\u003c\/h3\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eTypical processing solvents:\u003c\/em\u003e Methanol, ethanol\u003cbr\u003e\u003cem\u003eTypical suggested concentration: \u003c\/em\u003e1.0 mg\/ml or 1.0 mM\u003cbr\u003e\u003cem\u003eTypical processing procedure: \u003c\/em\u003ePATPA solution is spin-coated onto ITO surface for 30 s at the speed of 3000 rpm, followed by annealing for 10 min at 100 ℃ (from the fabrication of devices \u003ca rel=\"noopener\" title=\"patpa\" href=\"https:\/\/doi.org\/10.1038\/s41467-025-62388-4\" target=\"_blank\"\u003eDOI: 10.1038\/s41467-025-62388-4\u003c\/a\u003e\u003ca href=\"https:\/\/doi.org\/10.1002\/anie.202315281\" class=\"epub-doi\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/doi.org\/10.1126\/science.ade9637\"\u003e\u003c\/a\u003e).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eChemical Structure\u003c\/h2\u003e\n\u003chr\u003e\n\u003cfigure\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0823\/0287\/files\/patpa-136905-60-7-chemical-structure-body.png\" title=\"patpa, 136905-60-7 chemical structure\" target=\"_blank\"\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0823\/0287\/files\/patpa-136905-60-7-chemical-structure-body_320x240.png?v=1774447123\" alt=\"136905-60-7, patpa\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/a\u003e\n\u003cfigcaption\u003ePATPA chemical structure, CAS No. \u003cspan\u003e136905-60-7\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003ch2 id=\"msds\"\u003eMSDS Documentation\u003c\/h2\u003e\n\u003chr\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/downloads.ossila.com\/msds\/patpa.pdf\" title=\"patpa, 136905-60-7 MSDS Sheet\" target=\"_blank\"\u003e\u003cimg alt=\"patpa, 136905-60-7 MSDS Sheet\" class=\"msds-icon\" height=\"39\" loading=\"lazy\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/product-downloads-msds.svg\" width=\"30\"\u003ePATPA MSDS Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 id=\"literature\"\u003eLiterature and Reviews\u003c\/h2\u003e\n\u003chr\u003e\n\u003col\u003e\n\u003cli\u003eJ. Yang et al. (2025), \u003cem\u003eFlexibility meets rigidity: a self-assembled monolayer materials strategy for perovskite solar cells,\u003c\/em\u003e  Nat. Commun., 16, 6968; \u003ca rel=\"noopener\" title=\"patpa\" href=\"https:\/\/doi.org\/10.1038\/s41467-025-62388-4\" target=\"_blank\"\u003eDOI: 10.1038\/s41467-025-62388-4\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eA. Ullah et al. (2026), \u003cem\u003eSelf-Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery,\u003c\/em\u003e Adv. Mater., e20220, \u003ca rel=\"noopener\" title=\"patpa\" href=\"https:\/\/doi.org\/10.1002\/adma.202520220\" target=\"_blank\"\u003eDOI: 10.1002\/adma.202520220\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eL. Li et al. (2026), \u003cem\u003eSelf-Assembled Monolayers in Inverted Perovskite Solar Cells: A Rising Star with Challenges, \u003c\/em\u003eNano-Micro Lett. 18, 241; \u003ca rel=\"noopener\" title=\"patpa\" href=\"https:\/\/doi.org\/10.1007\/s40820-026-02089-9\" target=\"_blank\"\u003eDOI: 10.1007\/s40820-026-02089-9\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003ci\u003eLicensed by Helmholtz-Zentrum Berlin für Materialien und Energie GmbH in Germany and Kaunas University of Technology in Lithuania.\u003c\/i\u003e\u003c\/p\u003e\n\u003ch2 id=\"related-products\"\u003eRelated Products\u003c\/h2\u003e\n\u003chr\u003e\n\u003cp\u003e[[collection handle=\"self-assembled-monolayers\" limit=\"5\"]]\u003c\/p\u003e\n\u003cdiv class=\"collection-container\"\u003e\n\u003cdiv class=\"collection-tile\"\u003e\u003ca href=\"https:\/\/www.ossila.com\/collections\/self-assembled-monolayers\"\u003e\n\u003cdiv class=\"collection-button background-light-blue\"\u003e\n\u003cimg width=\"150\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/self-assembled-monolayers-collection-design.png?width=150\" loading=\"lazy\" height=\"109\" alt=\"Self-Assembled Monolayers (SAMs)\"\u003e\n\u003cp\u003e\u003cstrong\u003eSelf-Assembled\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMonolayers\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"collection-tile\"\u003e\u003ca href=\"https:\/\/www.ossila.com\/collections\/perovskite-materials\"\u003e\n\u003cdiv class=\"collection-button background-ossila-blue\"\u003e\n\u003cimg width=\"150\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/collection-link-Perovskite-Materials.png?width=150\" loading=\"lazy\" height=\"109\" alt=\"Perovskite Materials\"\u003e\n\u003cp\u003e\u003cstrong\u003ePerovskite Materials\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"collection-tile\"\u003e\u003ca href=\"https:\/\/www.ossila.com\/collections\/semiconducting-molecules\"\u003e\n\u003cdiv class=\"collection-button background-light-blue\"\u003e\n\u003cimg width=\"150\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/collection-link-Semiconducting-Molecules.png?width=150\" loading=\"lazy\" height=\"109\" alt=\"Semiconducting Molecules\"\u003e\n\u003cp\u003e\u003cstrong\u003eSemiconducting\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMolecules\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ossila","offers":[{"title":"250 mg","offer_id":51505977589976,"sku":"M2590A1-250mg","price":285.0,"currency_code":"USD","in_stock":true},{"title":"500 mg","offer_id":51505977622744,"sku":"M2590A1-500mg","price":435.0,"currency_code":"USD","in_stock":true},{"title":"1 g","offer_id":51505977655512,"sku":"M2590A1-1g","price":705.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/0287\/files\/patpa-136905-60-7-chemical-structure-title.png?v=1774446989","url":"https:\/\/www.ossila.com\/products\/patpa","provider":"Ossila","version":"1.0","type":"link"}