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Investigating the Delamination Mechanisms and Degradation Kinetics of Solar Module Materials
Investigating the Delamination Mechanisms and Degradation Kinetics of Solar Module Materials
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105624
- ISBN
- 9798265429346
- DDC
- 600
- 저자명
- Liu, Kuan-Jen.
- 서명/저자
- Investigating the Delamination Mechanisms and Degradation Kinetics of Solar Module Materials
- 발행사항
- [Sl] : Stanford University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 278 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Dauskardt, Reinhold;Gu, Wendy.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2025.
- 초록/해제
- 요약Delamination remains a cause of interfacial failure in perovskite and silicon modules that limit their lifetimes, posing a reliability risk. Delamination occurs when the driving force for fracture, G, exceeds the interfacial or bulk film fracture toughness, Gc. During the fabrication of the layers in a perovskite solar cell, delamination or thin-film fracture may occur due to tensile film stresses that build up due to thermal expansion coefficient mismatch between the charge transport and active layers with the underlying substrate, which is exacerbated when the deposited film thicknesses are large or if the processing temperatures are high. This dissertation first addresses the perovskite film fracture challenge by putting forward a predictive thin-film fracture mechanical model that links the processing parameters such as annealing temperature and film thickness to G. When G Gc, the model predicts delamination would occur, which clearly defines the limits on the processing temperatures and film thicknesses. Computations with common deposition methods and mechanical design guidelines are provided to prevent film fracture when manufacturing perovskite solar cells. Next, this dissertation discusses the delamination and encapsulant degradation reliability challenges in current commercial crystalline silicon photovoltaic modules. In silicon photovoltaic modules, degradation of the polymeric encapsulants that lead to mechanical embrittlement and delamination remains a cause of failure in solar installations, characterized by a decrease in the adhesion energy, Gc, at the encapsulant/cell and encapsulant/glass interfaces over prolonged field aging times. This dissertation presents a predictive multiscale reliability model that connects the degraded encapsulant molecular structure and interfacial bonding to the decreasing mechanical and fracture properties. The model is applied to predict the lifetimes of solar modules that contain common commercial encapsulants such as poly(ethylene-co-vinyl) acetate (EVA) and polyolefin elastomer (POE). The reliability model incorporates previous missing aspects such as incorporating encapsulant crosslinking, identifying the failure interface, and rigorously computing the contribution of attendant plasticity during the delamination (fracture) process. Next, this dissertation presents accelerated aging experiments on free-standing encapsulant films and adhesion coupons (cell/encapsulant/glass laminates). These aging tests, when combined with chemical, thermal, and mechanical characterization techniques, are used to probe the degradation and crosslinking kinetics in the polymeric encapsulants and their interfaces with the adjacent cell and glass substrates. These results further provide experimental data to validate the multiscale reliability model. Accelerated aging conditions were picked to systematically vary the environmental stressors (temperature, humidity, UV) to study their impacts on degradation rates. This work then investigates how the order of sequenced tests (e.g. UV weathering before hygrometric aging vs. after hygrometric aging) affects degradation rates and interfacial adhesion, which could potentially be incorporated into the IEC standards to ensure more robust modules. Lastly, future directions for research are discussed that could further advance the solar reliability research presented in this work.
- 일반주제명
- Mechanical properties
- 일반주제명
- Physical fitness
- 일반주제명
- Failure
- 일반주제명
- Glass substrates
- 일반주제명
- Discount coupons
- 일반주제명
- Thin films
- 일반주제명
- Polymers
- 일반주제명
- Polyethylene
- 일반주제명
- Materials science
- 일반주제명
- Spectrum analysis
- 일반주제명
- Temperature effects
- 일반주제명
- Fourier transforms
- 일반주제명
- Kinetics
- 일반주제명
- Silicon wafers
- 일반주제명
- Curing
- 일반주제명
- High school basketball
- 일반주제명
- Fracture mechanics
- 일반주제명
- Analytical chemistry
- 일반주제명
- Condensed matter physics
- 일반주제명
- Kinesiology
- 일반주제명
- Mathematics
- 일반주제명
- Mechanics
- 일반주제명
- Optics
- 일반주제명
- Polymer chemistry
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798265429346
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■035 ▼a(MiAaPQ)Stanfordyp263mf5760
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a600
■1001 ▼aLiu, Kuan-Jen.
■24510▼aInvestigating the Delamination Mechanisms and Degradation Kinetics of Solar Module Materials
■260 ▼a[Sl]▼bStanford University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a278 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Dauskardt, Reinhold;Gu, Wendy.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2025.
■520 ▼aDelamination remains a cause of interfacial failure in perovskite and silicon modules that limit their lifetimes, posing a reliability risk. Delamination occurs when the driving force for fracture, G, exceeds the interfacial or bulk film fracture toughness, Gc. During the fabrication of the layers in a perovskite solar cell, delamination or thin-film fracture may occur due to tensile film stresses that build up due to thermal expansion coefficient mismatch between the charge transport and active layers with the underlying substrate, which is exacerbated when the deposited film thicknesses are large or if the processing temperatures are high. This dissertation first addresses the perovskite film fracture challenge by putting forward a predictive thin-film fracture mechanical model that links the processing parameters such as annealing temperature and film thickness to G. When G Gc, the model predicts delamination would occur, which clearly defines the limits on the processing temperatures and film thicknesses. Computations with common deposition methods and mechanical design guidelines are provided to prevent film fracture when manufacturing perovskite solar cells. Next, this dissertation discusses the delamination and encapsulant degradation reliability challenges in current commercial crystalline silicon photovoltaic modules. In silicon photovoltaic modules, degradation of the polymeric encapsulants that lead to mechanical embrittlement and delamination remains a cause of failure in solar installations, characterized by a decrease in the adhesion energy, Gc, at the encapsulant/cell and encapsulant/glass interfaces over prolonged field aging times. This dissertation presents a predictive multiscale reliability model that connects the degraded encapsulant molecular structure and interfacial bonding to the decreasing mechanical and fracture properties. The model is applied to predict the lifetimes of solar modules that contain common commercial encapsulants such as poly(ethylene-co-vinyl) acetate (EVA) and polyolefin elastomer (POE). The reliability model incorporates previous missing aspects such as incorporating encapsulant crosslinking, identifying the failure interface, and rigorously computing the contribution of attendant plasticity during the delamination (fracture) process. Next, this dissertation presents accelerated aging experiments on free-standing encapsulant films and adhesion coupons (cell/encapsulant/glass laminates). These aging tests, when combined with chemical, thermal, and mechanical characterization techniques, are used to probe the degradation and crosslinking kinetics in the polymeric encapsulants and their interfaces with the adjacent cell and glass substrates. These results further provide experimental data to validate the multiscale reliability model. Accelerated aging conditions were picked to systematically vary the environmental stressors (temperature, humidity, UV) to study their impacts on degradation rates. This work then investigates how the order of sequenced tests (e.g. UV weathering before hygrometric aging vs. after hygrometric aging) affects degradation rates and interfacial adhesion, which could potentially be incorporated into the IEC standards to ensure more robust modules. Lastly, future directions for research are discussed that could further advance the solar reliability research presented in this work.
■590 ▼aSchool code: 0212.
■650 4▼aMechanical properties
■650 4▼aPhysical fitness
■650 4▼aFailure
■650 4▼aGlass substrates
■650 4▼aThermogravimetric analysis
■650 4▼aDiscount coupons
■650 4▼aThin films
■650 4▼aPolymers
■650 4▼aPolyethylene
■650 4▼aMaterials science
■650 4▼aSpectrum analysis
■650 4▼aTemperature effects
■650 4▼aFourier transforms
■650 4▼aKinetics
■650 4▼aSilicon wafers
■650 4▼aCuring
■650 4▼aHigh school basketball
■650 4▼aFracture mechanics
■650 4▼aAnalytical chemistry
■650 4▼aCondensed matter physics
■650 4▼aKinesiology
■650 4▼aMathematics
■650 4▼aMechanics
■650 4▼aOptics
■650 4▼aPolymer chemistry
■690 ▼a0794
■690 ▼a0486
■690 ▼a0611
■690 ▼a0575
■690 ▼a0405
■690 ▼a0346
■690 ▼a0752
■690 ▼a0495
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360819▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


