SMT, PCB Electronics Industry News

Rehm Thermal Oxidation Process safeguards PV metallization yields

Oct 26, 2009

A new thermal oxidation process from Rehm Thermal Systems has eliminated the challenge of residue contamination from photovoltaic metallization. In order to minimise maintenance and provide a cleaner process chamber, Rehm has innovatively implemented a proven method of thermal oxidation to enhance the performance of its RDS Drying Systems.

During the 200°C to 350°C curing process involved in metallization, significant quantities of vapour and smoke are produced which must be reliably exhausted from the process chamber in order to avoid contamination and yield loss. However, since there is a wide variation in paste compositions associated with solar metallization, it is not always possible to customise a suitably effective filter or condenser to manage the released vapour or smoke. As a thermal management specialist, Rehm has been engineering solutions to the challenge of residue contamination for many years. Now, as part of its advanced series of drying systems for PV metallization, the company has introduced the technology into the solar industry, along with its ability to substantially reduce the process’ condensate-forming potential.

Thermal oxidation is a process during which the volatile organic constituents and the hydrocarbons (VOCs) in the metallization pastes react with oxygen, and are decomposed. The goal is to burn the long-chain molecules in the vapour or smoke and transform them into readily volatile, non condensable substances. These are then easily discharged from the system, to significantly reduce the potential of condensation and in turn, minimise system maintenance. Due to the arrangement of the heater and the granulate pack in Rehm’s RDS Drying Systems results in a very compact, thermal reactor which requires little additional energy to reduce energy consumption even further.

Rehm’s thermal oxidation process involves heating the gas to a temperature greater than 500°C. The molecules cracked at these high temperatures and combine with atmospheric oxygen which is present within the system. In order to oxidise hydrocarbons in an energy-efficient manner at low reaction temperatures of nearly 500°C, catalyzers are installed downstream from the heating chamber. This results in a thermal reactor which is dimensioned for solar dryers such that a gas exchanger of greater than 40-fold assures reliable removal of the vapour or smoke which occurs in the process chamber. Rehm recently detailed its pioneering approach to residue management in a new technical paper entitled ‘Controlling Damaging Contamination in PV Metallization’.

About Rehm Thermal Systems

Rehm Thermal Systems (www.rehm-group.com) is an international supplier to the photovoltaic and electronics industries, specializing in curing, drying and firing technologies as well as convection and condensation soldering. Rehm operates vertically integrated manufacturing facilities in Germany, China, and Russia, and technical support facilities throughout Europe, Asia and North America.

Oct 12, 2011 -

Rehm announces new European distributors

Jun 16, 2011 -

Rehm Thermal Systems teams up with Siemens CT to tackle component complexities

Mar 17, 2011 -

Rehm to showcase convection & condensation soldering expertise at Apex

Apr 12, 2010 -

Rehm Thermal Systems will showcase advanced drying and firing processes for Solar Cell Metallization at SNEC

Mar 27, 2010 -

Rehm Thermal Systems sign agreement with DPI SRL as new representative for condensation soldering systems in Italy.

Mar 15, 2010 -

Enhanced reflow cooling technology introduced by Rehm Thermal Systems

Feb 22, 2010 -

Rehm Thermal Systems opens new Applications Center in Roswell, Ga.

Nov 03, 2009 -

Rehm Thermal Systems drive energy efficiency to unlock cost-of-ownership advantage

Oct 13, 2009 -

Rehm Thermal Systems will highlight advanced soldering & solar solutions at Productronica, booth A4.341

Sep 10, 2009 -

Rehm Thermal Systems showcases new fast-firing and drying technologies at EUPVSEC 2009, Booth B5/45

9 more news from Rehm Thermal Systems GmbH »

Jun 22, 2017 -

PNC Inc. Invests in LED Laser Direct Imaging system from Miva Technologies

Jun 22, 2017 -

Addressing The Modulation of Light Output -- High Quality LED Manufacturing

Jun 22, 2017 -

Schleuniger, Inc. Receives 2017 Best of Manchester Award

Jun 21, 2017 -

Inovar Inc. Breaks Ground for New Facility on USU Innovation Campus

Jun 21, 2017 -

PNC Inc. Launches Design Webinar Series

Jun 21, 2017 -

Saelig Introduces Mercury™ T2C USB 2.0 & Power Delivery Protocol Analyzer With Type-C Connection

Jun 20, 2017 -

Europlacer Secures Fourth Award from Industry Analysts Frost & Sullivan.

Jun 20, 2017 -

In Memory of Jim D. Raby, PE

Jun 20, 2017 -

Micro-Focused IR Thermal Testing with PDR's Focused IR

Jun 20, 2017 -

SCS to Present ‘Using Conformal Coatings to Mitigate System Failures’ during upcoming Webinar

See electronics manufacturing industry news »

Rehm Thermal Oxidation Process safeguards PV metallization yields news release has been viewed 972 times

reflow oven profiler

TWEEZER-VAC ELITE Vacuum SMD Tweezer Kit