{"product_id":"mf002800-semi-mf28-test-method-for-minority-carrier-lifetime-in-bulk-germanium-and-silicon-by-measurement-of-photoconductivity-decay","title":"MF002800 - SEMI MF28 - Test Method for Minority Carrier Lifetime in Bulk Germanium and Silicon by Measurement of Photoconductivity Decay","description":"\u003cp align=\"justify\" dir=\"ltr\"\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eMinority carrier lifetime is one of the essential characteristics of semiconductor materials. Many metallic impurities form recombination centers in germanium and silicon; in many cases, these recombination centers are deleterious to device and circuit performance. In other cases, the recombination characteristics must be carefully controlled to obtain the desired device performance.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eIf the free carrier density is not too high, minority carrier lifetime is controlled by such recombination centers; however, because it does not distinguish the type of center present, a measurement of minority carrier lifetime provides only a nonspecific, qualitative test for metallic contamination in the material.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eWhen present in sufficient quantity, free carriers control the lifetime; thus, these test methods do not provide a reliable means for establishing the presence of recombination centers due to unwanted metallic or other non-dopant impurities when applied to silicon specimens with resistivity below 1 Ω·cm.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eThis Test Method is suitable for use in research, development, and process control applications; it is not suitable for acceptance testing of polished wafers since it cannot be performed on specimens with polished surfaces.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eThis Test Method covers the measurement of minority carrier lifetime appropriate to carrier recombination processes in bulk specimens of extrinsic single-crystal germanium or silicon.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eThe following two test methods are described:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul dir=\"ltr\"\u003e\n\u003cli align=\"justify\"\u003eTest Method A — Pulsed Light Method, this is suitable for both silicon and germanium.\u003c\/li\u003e\n\u003cli align=\"justify\"\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eTest Method B — Chopped Light Method, that is specific to silicon specimens with resistivity ≥1 Ω·cm.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp align=\"justify\" dir=\"ltr\"\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003e\u003cb\u003eReferenced SEMI Standards\u003c\/b\u003e (purchase separately)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI M59 — Terminology for Silicon Technology\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF42 — Test Method for Conductivity Type of Extrinsic Semiconducting Materials\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF43 — Test Method for Resistivity of Semiconductor Materials\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF391 — Test Method for Minority Carrier Diffusion Length in Extrinsic Semiconductors by Measurement of Steady-State Surface Photovoltage\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF1535 — Test Method for Carrier Recombination Lifetime in Silicon Wafers by Noncontact Measurement of Photoconductivity Decay by Microwave Reflectance\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eRevision History\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF28-0317E (Reapproved 0622)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF28-0317E (editorial revision)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF28-0317 (technical revision)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF28-0707 (Reapproved 0912)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF28-0707 (technical revision)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF28-1106 (technical revision)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:11pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style=\"font-family:Calibri,sans-serif\"\u003e\u003cspan style=\"font-size:10.0pt\"\u003e\u003cspan style=\"line-height:107%\"\u003e\u003cspan style='font-family:\"Arial\",sans-serif'\u003eSEMI MF28-02 (first SEMI publication)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"semi.org","offers":[{"title":"SEMI MF28-0317E (Reapproved 0622) - Current","offer_id":40234286022723,"sku":"15126","price":31900.0,"currency_code":"JPY","in_stock":true},{"title":"SEMI MF28-0317 - Superseded","offer_id":40234286088259,"sku":"4953","price":31900.0,"currency_code":"JPY","in_stock":true},{"title":"SEMI MF28-0707 (Reapproved 0912) - Superseded","offer_id":40234286121027,"sku":"9933","price":31900.0,"currency_code":"JPY","in_stock":true},{"title":"SEMI MF28-0707 - Superseded","offer_id":40234286153795,"sku":"9932","price":31900.0,"currency_code":"JPY","in_stock":true},{"title":"SEMI MF28-1106 - Superseded","offer_id":40234286186563,"sku":"9934","price":31900.0,"currency_code":"JPY","in_stock":true},{"title":"SEMI MF28-02 - Superseded","offer_id":40234286219331,"sku":"9930","price":31900.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/3402\/3747\/files\/MFVolume_22c1c640-6a5c-4901-9307-f2adb613a6f6.png?v=1776702525","url":"https:\/\/store-dev2.semi.org\/en-jp\/products\/mf002800-semi-mf28-test-method-for-minority-carrier-lifetime-in-bulk-germanium-and-silicon-by-measurement-of-photoconductivity-decay","provider":"SEMI Dev 2","version":"1.0","type":"link"}