An optimized teflon bonding process for solar cell assemblies using Pilkington CMZ and CMG coverglasses

Design and Implementation of an Auto Bonding Manufacturing Process for Space Solar Cells

“…An important feature of cover glasses is the thermal expansion coefficient. The new designed CMZ and CMG cover glasses have thermal expansion coefficients matching those of silicon and Gallium Arsenide, respectively, which allow the cover glass to be directly bonded to the solar cell via advanced bonding techniques such as electrostatic bonding [8][9][10]31]. There is a trend that the thickness of cover glasses becomes thinner, from 120 m to 70-50 m [26].…”

“…The traditional way of bonding an anti-irradiation cover glass to a silicon solar cell is by means of silicone adhesive or Teflon [7][8][9]. Advanced bonding techniques such as electrostatic bonding may be employed to bond the cover glass directly to the Si or GaAs solar cell, if they have a matching thermal expansion coefficient [10][11][12][13].…”

A space solar cell bonding robot

“…Based on the physical characteristic of the solar cell, there are four kinds of technologies used in bonding the cover-glass to the solar cells. These are static electricity bonding, Teflon bonding, two sides array bonding, and cover-glass adhesive bonding [9,10]. The principle behind the last one is the easiest, but there are some craft problems that need to be resolved when operated in a conventional method.…”

Auto-bonding robot for space solar cells

“…1,3,10−13 Due to advantages of its physical properties, one bonding technique for space solar cells is adhesive bonding under nonvacuum conditions. 14,15 The process of adhesive bonding can be described as follows: first, the adhesive is dispensed on the solar cell, then the cover-glass is placed on the solar cell. After that, the adhesive is heated and hardened.…”