{"product_id":"hpht-single-crystal-diamond-seed-plates-for-cvd-growth-low-stress-diamond-seeds","title":"HPHT Single Crystal Diamond Seed Plates for CVD Growth | Low-Stress Diamond Seeds","description":"\u003cp\u003eHPHT Single Crystal Diamond Seed Plates are used as substrates for homoepitaxial CVD diamond growth.\u003c\/p\u003e\n\u003cp\u003eWe supplies yellow and white HPHT diamond seed plates in standard sizes from 3 × 3 mm to 7 × 7 mm, with larger dimensions available subject to material availability. Standard thickness is 0.3 mm, while 0.2 mm, 0.5 mm, 0.8 mm and thicker plates can be provided on request.\u003c\/p\u003e\n\u003cp\u003eHPHT diamond seed plates are widely used because they provide an accessible, mature and customizable single crystal diamond substrate for CVD homoepitaxial growth\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 30%; height: 19.5938px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"width: 70%; height: 19.5938px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eProduct name\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eHPHT Single Crystal Diamond Seed Plates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eHPHT single crystal diamond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"height: 39.1875px;\"\u003eTypical use\u003c\/td\u003e\n\u003ctd style=\"height: 39.1875px;\"\u003eHigh-quality CVD diamond, electronic-grade CVD diamond, optical-grade CVD diamond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eStandard size range\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e3 × 3 × 0.3 mm to 7 × 7 × 0.3 mm, or larger size, or custom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"height: 39.1875px;\"\u003eThickness\u003c\/td\u003e\n\u003ctd style=\"height: 39.1875px;\"\u003e0.3 mm standard; 0.2 mm, 0.5 mm, 0.8 mm, 1.0 mm+ available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eColor options\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eYellow HPHT diamond \/ White HPHT diamond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eCrystal structure\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eSingle crystal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eGrowth method\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eHPHT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eStress characteristic\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eLow-stress seed substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eShape\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eSquare shape \/ Rectangular shape \/ As-grown shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eSurface finish\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eDouble polished, Ra \u0026lt; 30 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eIb \u0026amp; IIa Type Options\u003cbr\u003e\u003csmall\u003e(Yellow \u0026amp; White HPHT Diamond Seed Plates)\u003c\/small\u003e\n\u003c\/h2\u003e\n\u003cp\u003eDiamond Component supplies both yellow and white HPHT single crystal diamond plates for seed applications.\u003c\/p\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eType\u003c\/th\u003e\n\u003cth style=\"width: 40%;\"\u003eDescription\u003c\/th\u003e\n\u003cth style=\"width: 35%;\"\u003ePicture\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYellow HPHT diamond seed plate\u003c\/td\u003e\n\u003ctd\u003eDiamond type: Ib, with yellow color appearance\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 100%; max-width: 200px; height: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0798\/2124\/2425\/files\/HPHTsinglecrystaldiamondseedplatesforCVDgrowth1.jpg?v=1780924131\" alt=\"Yellow HPHT diamond seed plate\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhite HPHT diamond seed plate\u003c\/td\u003e\n\u003ctd\u003eDiamond type: IIa, higher visual transparency \/ white appearance\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 100%; max-width: 200px; height: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0798\/2124\/2425\/files\/White_HPHT_single_crystal_diamond_seed_plate.jpg?v=1780924354\" alt=\"White HPHT diamond seed plate\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eColor is used as a selection reference and does not replace technical evaluation. For CVD growth projects, the final choice should be based on seed quality, stress condition, surface finish, crystal quality and growth requirements.\u003c\/p\u003e\n\u003ch2\u003eShape Options\u003c\/h2\u003e\n\u003cp\u003eHPHT Single Crystal Diamond Seed Plates are available in two main shape options: \u003cstrong\u003eas-grown shape\u003c\/strong\u003e and \u003cstrong\u003esquare \/ rectangular laser-cut shape\u003c\/strong\u003e. The best option depends on the customer's CVD growth process, reactor design, seed mounting method and crystal orientation requirements.\u003c\/p\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eShape Option\u003c\/th\u003e\n\u003cth style=\"width: 40%;\"\u003eDescription\u003c\/th\u003e\n\u003cth style=\"width: 35%;\"\u003ePicture\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAs-Grown Shape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThe seed plate keeps its original as-grown outline. The edges are not laser-cut, and the natural crystal edges are retained. Shape may vary from piece to piece.\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 100%; max-width: 200px; height: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0798\/2124\/2425\/files\/YellowHPHTdiamondseedplatesforCVDdiamondgrowth.jpg?v=1780924098\" alt=\"As-grown HPHT diamond seed plate\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSquare or Rectangle Shape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFour edges are laser-cut to form a regular square or rectangular plate with four right-angle corners. Edge crystal orientation can be specified by the customer.\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 100%; max-width: 200px; height: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0798\/2124\/2425\/files\/HPHTsinglecrystaldiamondseedplatesforCVDgrowth1.jpg?v=1780924131\" alt=\"Square HPHT diamond seed plate\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eHPHT Seed Plates vs CVD Seed Plates\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 407.453px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 16.787%; height: 39.1875px;\"\u003eItem\u003c\/th\u003e\n\u003cth style=\"width: 29.0614%; height: 39.1875px;\"\u003eHPHT Diamond Seed Plates\u003c\/th\u003e\n\u003cth style=\"width: 53.4296%; height: 39.1875px;\"\u003eCVD Diamond Seed Plates\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 16.787%; height: 39.1875px;\"\u003eMaterials type\u003c\/td\u003e\n\u003ctd style=\"width: 29.0614%; height: 39.1875px;\"\u003eHPHT, Ib \u0026amp;IIa type\u003c\/td\u003e\n\u003ctd style=\"width: 53.4296%; height: 39.1875px;\"\u003eCVD, IIa type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 16.787%; height: 39.1875px;\"\u003eCrystal structure\u003c\/td\u003e\n\u003ctd style=\"width: 29.0614%; height: 39.1875px;\"\u003eSingle crystal\u003c\/td\u003e\n\u003ctd style=\"width: 53.4296%; height: 39.1875px;\"\u003eSingle crystal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 16.787%; height: 39.1875px;\"\u003eStress level\u003c\/td\u003e\n\u003ctd style=\"width: 29.0614%; height: 39.1875px;\"\u003eLow stress of selected seeds\u003c\/td\u003e\n\u003ctd style=\"width: 53.4296%; height: 39.1875px;\"\u003eMay have higher residual stress depending on growth condition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 16.787%; height: 39.1875px;\"\u003eMain Features\u003c\/td\u003e\n\u003ctd style=\"width: 29.0614%; height: 39.1875px;\"\u003eSmall size. Provide a stable single crystal diamond template to allow the CVD layer to continue growing along the existing lattice.\u003c\/td\u003e\n\u003ctd style=\"width: 53.4296%; height: 39.1875px;\"\u003eLarge size up to 30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 211.516px;\"\u003e\n\u003ctd style=\"text-align: center; width: 16.787%; height: 211.516px;\"\u003ePicture (Stress)\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 29.0614%; height: 211.516px;\"\u003e\u003cimg style=\"width: 100%; max-width: 200px; height: auto;\" alt=\"HPHT diamond stress\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0798\/2124\/2425\/files\/stress_for_HPHT_diamond2.png?v=1780925700\"\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 53.4296%; height: 211.516px;\"\u003e\u003cimg style=\"width: 100%; max-width: 200px; height: auto;\" alt=\"CVD seed stress\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0798\/2124\/2425\/files\/stress_of_CVD_seeds_ad7d55e8-4bfa-4553-8fc0-e11fe3cf88e7.png?v=1780925696\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eHPHT seed plates are often selected when the customer needs a low-stress starting substrate for growing high-quality CVD diamond layers.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eRequest a Quote\u003c\/h2\u003e\n\u003cp\u003eHPHT diamond seed plates are supplied according to size, thickness, color, surface finish, crystal quality and application requirements. Please submit your CVD growth requirements for quotation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1) Required size and thickness\u003c\/p\u003e\n\u003cp\u003e2) Yellow or white HPHT diamond preference\u003c\/p\u003e\n\u003cp\u003e3) Shape preference\u003c\/p\u003e\n\u003cp\u003e4) Quantity\u003c\/p\u003e\n\u003cp\u003e5) Orientation requirement, if any\u003c\/p\u003e\n\u003cp\u003e6) Target delivery date\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cp\u003eThis product is supplied as an industrial functional diamond seed material. It is not a jewelry diamond, gemstone, loose diamond or decorative lab-grown diamond.\u003c\/p\u003e\n\u003cp\u003eStandard dimensions and custom sizes are subject to material availability, yield and technical feasibility. For electronic-grade CVD growth, customers should confirm final suitability through their own growth process and qualification tests.\u003c\/p\u003e","brand":"INFI diamond components","offers":[{"title":"Default Title","offer_id":45928024670265,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/2124\/2425\/files\/HPHTsinglecrystaldiamondseedplatesforCVDgrowth1.jpg?v=1780924131","url":"https:\/\/diamondcomponent.com\/products\/hpht-single-crystal-diamond-seed-plates-for-cvd-growth-low-stress-diamond-seeds","provider":"INFI diamond components","version":"1.0","type":"link"}