Electroless Deposition: A Mechanistic Approach

无电沉积具有许多极其重要的技术应用，最显著的是在集成电路的制造中。该方法包括金属（例如铜或银）从其盐（例如Cu（II）或Ag（I））的溶液中自发还原。显然，需要还原剂-一种充当电子源的化学物质，但无电反应特别有用，因为表面（充当催化剂以允许沉积进行）也是必要的。这意味着沉积是特定的，并且在某种程度上可以控制。该技术用于在各种类型的表面上存款金属涂层，但近年来已成为非常重要的一种手段，存款铜互连所需的微电子（你的笔记本电脑可以工作，因为一些显然简单，但聪明，化学）。令人惊讶的是，鉴于其重要性，该过程的化学基本原理并没有得到很好的理解。无电镀工艺的欺骗性简单可能是造成这种知识差距的原因。在这里，概述了一种新的基于电化学的方法来探测无电沉积。本建议的目的是建立新的方法，作为国家的最先进的技术，用于确定有关这个重要的金属沉积过程的基本参数。

Electroless deposition has a number of extremely important technological applications, most notably in the fabrication of integrated circuits. The method consists of the spontaneous reduction of a metal (for example copper or silver) from a solution of its salt, e.g. Cu(II) or Ag(I). Clearly a reducing agent - a chemical which acts as the source of the electrons - is required, but the electroless reaction is particularly useful because a surface (that acts as a catalyst to allow the deposition to proceed) is also necessary. This means that deposition is specific and, to some extent, can be controlled. The technique is used to deposit metallic coatings on various types of surface, but has become very important in recent years as a means to deposit the copper interconnects required in microelectronics (your lap-top can function because of some apparently simple, but clever, chemistry). Surprisingly, in view of its importance, the chemical fundamentals of this process are not well understood. The deceptive simplicity of the electroless process is probably the reason for this knowledge gap . Here, a novel electrochemically-based approach to probe electroless deposition is outlined. The aim of this proposal is to establish the new method as the state-of-the art technique for the determination of basic parameters relating to this important metal deposition process.