JP6102823B2 - Soi基板の評価方法 - Google Patents
Soi基板の評価方法 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims description 77
- 238000000034 method Methods 0.000 title claims description 24
- 238000011156 evaluation Methods 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/14—Measuring as part of the manufacturing process for electrical parameters, e.g. resistance, deep-levels, CV, diffusions by electrical means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/12—Measuring as part of the manufacturing process for structural parameters, e.g. thickness, line width, refractive index, temperature, warp, bond strength, defects, optical inspection, electrical measurement of structural dimensions, metallurgic measurement of diffusions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/64—Impedance arrangements
- H01L23/66—High-frequency adaptations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1203—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body the substrate comprising an insulating body on a semiconductor body, e.g. SOI
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Description
このような技術として、例えば、BOX層とベースウェーハの界面にポリシリコン層や窒化酸化物のような中間層(トラップ層)を導入して、反転層が形成されないようにして、良好な高周波特性のSOIウェーハを得ることができる技術が知られている(例えば特許文献1,2、非特許文献1)。
予め測定用のSOI基板にデバイスを形成し、該測定用のSOI基板の界面準位密度と高周波印加時の漏れ電力との関係、または前記界面準位密度を抵抗に換算し、該換算した抵抗と前記漏れ電力との関係を求めておく工程と、
前記評価対象のSOI基板の界面準位密度を測定して界面準位密度を求める、または該界面準位密度に基づき換算される抵抗を求める工程と、
前記測定した前記評価対象のSOI基板の前記界面準位密度から、前記予め求めた界面準位密度と漏れ電力の関係に基づき、前記評価対象のSOI基板の漏れ電力を評価する、または前記測定した前記評価対象のSOI基板の前記界面準位密度より換算される抵抗から、前記予め求めた抵抗と漏れ電力の関係に基づき、前記評価対象のSOI基板の漏れ電力を評価する工程とを有することを特徴とするSOI基板の評価方法を提供する。
第1の実施態様では、最初に測定用のSOI基板を用いて、界面準位密度と高周波印加時の漏れ電力との関係を予め求めておく工程を行う。
測定用のSOI基板としては、図1に示すようなSOI層1と、シリコン酸化膜であるBOX層2と、ベースウェーハ4と、BOX層2とベースウェーハ4との界面でキャリアの発生を抑制するトラップ層3とを有する評価用のSOI基板5と同じものを用意する。
このようにして測定された、SOI基板5の界面準位密度と、高周波印加時の漏れ電力とを用いて、両者の間の相関関係を予め求めておく。
まず、評価対象となるSOI基板を用意する。評価対象となるSOI基板も図1に示すようなSOI層1と、BOX層2と、トラップ層3、及び、ベースウェーハ4とを有するSOI基板5である。この評価対象SOI基板5の界面準位密度を測定し、界面準位密度を求める。なお、界面準位密度の測定には、前述したように水銀電極を使用した疑似MOSFET法、あるいはCV法によって測定することができる。
前述したように、測定用のSOI基板の界面準位密度と漏れ電力との関係を予め求めておいた関係に基づいて、測定した評価用のSOI基板の界面準位密度から、評価用のSOI基板の漏れ電力を予想して評価することができる。
このように、本発明によれば、評価用のSOI基板に実際にデバイスを作製することなく、SOI基板の漏れ電力すなわち、高周波特性を評価をすることができる。
第2の実施態様では、最初に測定用のSOI基板の界面準位密度の測定結果に基づいて換算した抵抗と漏れ電力との関係を求めておく工程を予め行う。
界面準位密度を抵抗に換算するには、以下のような方法で行うことができる。
数式1の関係から、界面準位密度からSSL(Subthreshold Slope)の値を求めることができる。このとき、SSLは図5に示すような電流(Id)が一桁増加する際の電圧(Vg)の変化と定義されている。なお、COXはBOX層容量、CSiはSOI層容量を示す。
このSSLを界面準位密度から求めた抵抗RD(数式2の抵抗成分のV/Iに相当)として定義し、この抵抗RDから、通常の抵抗に換算する。このときの換算係数は、高周波測定の結果から求めておくことができる(数式2、3)。なお、ρは低効率、RSPは広がり抵抗を示す。
このようにして界面準位密度の測定結果に基づいて換算した抵抗と、測定により求められた高周波印加時の漏れ電力とを用いて、両者の間の相関関係を予め求めておく。
この際、評価対象のSOI基板の界面準位密度を測定して、得られた界面準位密度から、前述したのと同様にして、抵抗に換算する。
抵抗率1000Ω・cmのボロンをドープした直径200mmのシリコン単結晶ウェーハをベースウェーハとして、このベースウェーハに対してトリクロロシランを原料ガスとして1150℃、成長時間3分間で多結晶層を3μm成長させた。この後、モノシランを原料として570℃、成長時間90分で多結晶層を0.5μm成長させ、トラップ層とした。
これらのSOI基板について、450℃、1%水素添加の窒素雰囲気でアニール時間を5分から30分の間で変化させて、BOX層とベースウェーハの界面準位密度を変化させた、複数のSOI基板を作製した。
漏れ電力を測定するデバイスは、測定用のSOI基板に150μm×50μmのAl電極を電極間の間隔が100μmとなるように形成したものとした。
このときに、厚さ160nmのSOI層容量Csiは6.53×10−8F、厚さ1000nmのBOX層容量Coxは7.195×10−8Fとなる。数1から、界面準位密度が1×1012cm−2eV−1のときSSLは、0.15、界面準位密度が1×1011cm−2eV−1のときは、SSLは0.015、界面準位密度が1×1010cm−2eV−1のときはSSLは0.0015と求められた。
5…SOI基板。
Claims (1)
- 評価対象のSOI基板に高周波を印加したときの高周波特性を評価する方法であって、
予め測定用のSOI基板にデバイスを形成し、該測定用のSOI基板の界面準位密度と高周波印加時の漏れ電力との関係、または前記界面準位密度を抵抗に換算し、該換算した抵抗と前記漏れ電力との関係を求めておく工程と、
前記評価対象のSOI基板の界面準位密度を測定して界面準位密度を求める、または該界面準位密度に基づき換算される抵抗を求める工程と、
前記測定した前記評価対象のSOI基板の前記界面準位密度から、前記予め求めた界面準位密度と漏れ電力の関係に基づき、前記評価対象のSOI基板の漏れ電力を評価する、または前記測定した前記評価対象のSOI基板の前記界面準位密度より換算される抵抗から、前記予め求めた抵抗と漏れ電力の関係に基づき、前記評価対象のSOI基板の漏れ電力を評価する工程とを有することを特徴とするSOI基板の評価方法。
Priority Applications (8)
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JP2014100758A JP6102823B2 (ja) | 2014-05-14 | 2014-05-14 | Soi基板の評価方法 |
US15/305,989 US9780006B2 (en) | 2014-05-14 | 2015-02-25 | Method for evaluating SOI substrate |
KR1020167030635A KR102185647B1 (ko) | 2014-05-14 | 2015-02-25 | Soi 기판의 평가 방법 |
CN201580024451.1A CN106415806B (zh) | 2014-05-14 | 2015-02-25 | Soi基板的评估方法 |
SG11201608834SA SG11201608834SA (en) | 2014-05-14 | 2015-02-25 | Method for evaluating soi substrate |
EP15793091.8A EP3144965B1 (en) | 2014-05-14 | 2015-02-25 | Method for evaluating soi substrate |
PCT/JP2015/000943 WO2015173995A1 (ja) | 2014-05-14 | 2015-02-25 | Soi基板の評価方法 |
TW104106446A TWI609189B (zh) | 2014-05-14 | 2015-03-02 | SOI substrate evaluation method |
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JPH0233946A (ja) * | 1988-07-23 | 1990-02-05 | Nec Corp | 半導体装置 |
JP2001060676A (ja) * | 1999-08-20 | 2001-03-06 | Mitsubishi Materials Silicon Corp | 界面準位密度の算出方法 |
CN1332451C (zh) * | 2001-09-12 | 2007-08-15 | 日本电气株式会社 | 半导体器件及其制造方法 |
FR2860341B1 (fr) | 2003-09-26 | 2005-12-30 | Soitec Silicon On Insulator | Procede de fabrication de structure multicouche a pertes diminuees |
KR20060118437A (ko) | 2003-09-26 | 2006-11-23 | 위니베르시트카솔리끄드루뱅 | 저항손을 감소시키는 다층 반도체 구조의 제조 방법 |
US20080054920A1 (en) * | 2004-06-25 | 2008-03-06 | Shin-Etsu Handotai Co., Ltd. | Method For Evaluating Soi Wafer |
JP4419710B2 (ja) * | 2004-06-25 | 2010-02-24 | 信越半導体株式会社 | Soiウエーハの評価方法 |
TWI463344B (zh) * | 2005-10-24 | 2014-12-01 | Cadence Design Systems Inc | 積體電路時序、雜訊、及功率分析技術 |
JP2007324194A (ja) * | 2006-05-30 | 2007-12-13 | Shin Etsu Handotai Co Ltd | Soiウエーハの評価方法 |
JP4776598B2 (ja) * | 2007-08-23 | 2011-09-21 | 株式会社アドバンテスト | 管理方法、管理装置、及びデバイス製造方法 |
JP2009231376A (ja) | 2008-03-19 | 2009-10-08 | Shin Etsu Handotai Co Ltd | Soiウェーハ及び半導体デバイスならびにsoiウェーハの製造方法 |
JP5532680B2 (ja) * | 2009-05-27 | 2014-06-25 | 信越半導体株式会社 | Soiウェーハの製造方法およびsoiウェーハ |
CN101702627B (zh) * | 2009-10-29 | 2012-10-03 | 华东师范大学 | 一种基于绝缘体上硅工艺的cmos射频开关 |
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TW201543049A (zh) | 2015-11-16 |
CN106415806B (zh) | 2019-06-04 |
CN106415806A (zh) | 2017-02-15 |
US9780006B2 (en) | 2017-10-03 |
US20170047258A1 (en) | 2017-02-16 |
KR102185647B1 (ko) | 2020-12-02 |
WO2015173995A1 (ja) | 2015-11-19 |
TWI609189B (zh) | 2017-12-21 |
SG11201608834SA (en) | 2016-11-29 |
JP2015220257A (ja) | 2015-12-07 |
KR20170003554A (ko) | 2017-01-09 |
EP3144965B1 (en) | 2020-11-25 |
EP3144965A1 (en) | 2017-03-22 |
EP3144965A4 (en) | 2018-01-10 |
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