用于高功率光电子设备的烧结
Hannes Schwan1, Nihesh Mohan1, Maximilian Schmid1
1Institute for Innovative Mobility (IIMo), University of Applied Science Ingolstadt, Esplanade 10, 85049 Ingolstadt, Germany.
Micromachines
|October 29, 2025
概括
新的铜油墨烧结为光电子设备提供了一种经济高效的替代金接剂. 虽然与银的互连相匹配,但它的第一级热性能接近金锡,显示了先进电子包装的前景.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 光电学是指光电子产品.
背景情况:
- 金-80tin-20 (AuSn) 是光电子组件的标准,因为它的可靠性.
- 黄金的高成本需要探索用于先进电子包装的替代材料.
- 基于铜的烧结是一种潜在的低成本,高性能互连解决方案.
研究的目的:
- 研究用于光电子子模块的新型基于铜的烧结的热性能.
- 比较无颗粒铜墨水连接器与商业铜,银纳米粒子连接器和AuSn接器.
- 评估铜烧结用于第一层和第二层互连的可行性.
主要方法:
- 使用基于复合铜盐的无颗粒铜墨水,使得在现场产生纳米粒子.
- 在气下以275°C的温度在30MPa压力下烧结连接器15分钟.
- 进行过渡热分析以评估热性能和机械强度的剪切测试.
主要成果:
- 实现了均的2-5微米铜层,剪切强度超过31 MPa.
- 铜油墨接口的热性能与薄的AuSn接口相美,并在第二层相匹配的银联接口.
- 由于铜层厚度的变化,第一级粘合显示了AuSn和商业糊的优势.
结论:
- 基于铜的烧结,特别是使用新型无颗粒墨水,是一种可行的,具有成本效益的替代品,用于光电子产品的AuSn接.
- 优化铜层均性和粘合压力对于提高一级互连性能至关重要.
- 这项技术在热效率高,价格低廉的光电子设备组装方面具有显著的潜力.
相关概念视频
Atomic Absorption Spectroscopy: Radiation and Light Sources
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Atomic Absorption Spectroscopy: Atomization Methods
Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...
Atomic Emission Spectroscopy: Overview
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
Atomic Emission Spectroscopy: Instrumentation
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
Atomic Emission Spectroscopy: Lab
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
Flame Photometry: Overview
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...


