Copper migration suppression in epoxy film using zeolitic imidazolate framework-8
- 주제(키워드) copper migration , epoxy film , ZIF-8
- 발행기관 고려대학교 대학원
- 지도교수 윤호규
- 발행년도 2018
- 학위수여년월 2018. 2
- 학위구분 석사
- 학과 대학원 신소재공학과
- 원문페이지 64 p
- 실제URI http://www.dcollection.net/handler/korea/000000080316
- 본문언어 영어
- 제출원본 000045932359
초록/요약
In order to inhibit the Cu electrochemical migration (ECM) in epoxy film used as adhesive between chip and substrate in electronic packaging applications, synthesized zeolitic imidazolate framework-8 (ZIF-8) nanoparticles were used for additive in epoxy matrix. ZIF-8 is composed of zinc (II) ion clusters linked by imidazolate ligands and it has microporous crystalline structure and large specific surface area, which could play a role as adsorbent for copper ion via ion exchange and coordination bonding. The synthesized ZIF-8 nanocrystals ware shown similar character as reported extensive previous studies, as confirmed by X-ray diffraction, spectroscopies, and gas sorption analysis. Through CuSO4 solution test, it showed good adsorbability for copper ion. Epoxy composite samples including ZIF-8 were fabricated with loadings up to 10wt%. As ZIF-8 contents increased, the uptake of copper ion in the sample enhanced. Cu migration test was performed under JEDEC Steady-state Temperature Humidity Bias Life Test (THB) condition during approximately 300 hours. For the sample not including any ZIF-8, short-circuit failure occurred at 102 hours, whereas the others including ZIF-8 didn't happen failure for 300 hours. It demonstrates that the ZIF-8 as additive in the epoxy composite is an effective solution to suppress the copper migration phenomena.
more목차
Contents
ABSTRACT i
LIST OF TABLES v
LIST OF FIGURES v
1. INTRODUCTION 1
2. EXPERIMENTAL
2-1. Materials 8
2-2. Sample preparation
2-2-1. Synthesis of ZIF-8 crystals 10
2-2-2. Fabrication of epoxy composite adding ZIF-8 10
2-2-3. Fabrication of Cu migration test specimens 11
2-3. Measurements
2-3-1. Copper ion adsorption test 14
2-3-2. X-ray diffraction analysis 15
2-3-3. X-ray photoelectron spectroscopy 15
2-3-4. Fourier-transform infrared spectroscopy 15
2-3-5. BET (specific surface area) analysis 16
2-3-6. TEM-EDX analysis 16
2-3-7. Thermal analysis 16
2-3-8. Inductively coupled plasma atomic emission spectroscopy 17
2-3-9. Copper ion migration test 17
3. RESULTS AND DISCUSSION
3-1. Characterization of synthesized ZIF-8
3-1-1. BET (specific surface area) analysis 21
3-1-2. Morphology and element measurement 23
3-1-3. X-ray diffraction 25
3-1-4. XPS analysis 27
3-1-5. FT-IR analysis 30
3-2. Adsorption test for Cu2+ ion in epoxy composite
3-2-1. Thermal analysis (establishment of cure condition) 32
3-2-2. X-ray diffraction in composite state 34
3-2-3. XPS analysis in composite state for each ZIF-8 contents 36
3-2-4. ICP-AES analysis 40
3-3. Cu electrochemical migration test 42
4. CONCLUSIONS 48
REFERENCES 49
