SoLayTec backs up new cell efficiency gains with customer data

Share on facebook
Facebook
Share on twitter
Twitter
Share on linkedin
LinkedIn
Share on reddit
Reddit
Share on email
Email
SoLayTec's new second generation InPassion ALD product demonstrated a cell efficiency gain of 0.2% compared to PECVD AIO×. Source: SoLayTec

Atomic layer deposition (ALD) equipment specialist SoLayTec, a subsidiary of Amtech Systems, has launched its second generation InPassion ALD tool for PERC cells.

According to the company, combined with the newest direct PECVD, it can annually produce up to 130MW, including the integrated anneal process.

The new product has been hailed by SoLayTec as “a highly cost-effective solution” capex-wise and has published customer data to back this claim up. The main improvement of the second generation model is cited as the uptime and net throughput of the machine. The company also claimed that TMA usage and efficiency gains edge the new product above competitors.

“For PERC integration the Al2O3 ALD machine only, is not the complete solution. A customer also needs a PECVD capping machine for covering the Al2O3 layer. So far a customer needed at least six direct PECVD tubes to meet the ALD output of 3600wph. Since the 10th SNEC exhibition in Shanghai, [Amtech subsidiary] Tempress introduced the SPECTRUM PECVD which has at least the same net capacity as the InPassion ALD. So now capex wise we have a highly cost effective solution available for our customers”, said Roger Görtzen, co-founder of SoLayTec and director of marketing and sales.

During Intersolar Europe 2016, leading PV cell manufacturer Hanwha Q CELLS published results of using the InPassion ALD compared with their MW-PECVD system. A comparison of the two technologies found that the SoLayTec product offered a 0.15-0.25% better efficiency for multi-cSi PERC compared to the MW-PECVD AIO×.

The evaluation showed that this efficiency was achieved by “optimising the process flow and integrating a post-deposition anneal into the SiNx capping process,” as stated by a Hanwha Q CELLS research paper. The technical paper also found that the SoLayTec product demonstrated improved passivation quality resulting in the Voc gain remaining constant during light and elevated temperature induced degradation measurements.

“At SoLayTec we are very proud of this result, confirming our efficiency benefits at an important tier one cell manufacturer”, said Görtzen, in a statement. “For our customer this gives a wider opportunity to use our ALD system, besides PERC applications also for other high efficiency cell concepts like: n-PERT, IBC, PERL and the latest Topcon approach,” he added. 

Tempress and SoLayTec are both part of the Industrial Affiliation programme at research institute imec. At Intersolar, imec and its partners presented the latest results of their large area n-type IBC cells of 22.8%. Imec already proved that ALD Al2O3 was a good passivation material for p+ emitters, but in this work the ALD from SoLayTec plays a significant role to passivate also the n+ emitter, the company explained. In the past, the standard passivation method was always by using Wet thermal SiOx, but now also for IBC concepts the gain is +0.3% by using the ALD Al2O3 layer.

SoLayTec recently performed a PERC integration for a customer in Asia. This ramp-up of a standard multi cell line into mono PERC reached a daily capacity of 50,000 PERC solar cells, with a stable cell efficiency of 20.6%.

The PV CellTech 2017 conference, focussed specifically on solar cell manufacturing, will take place in Penang, Malaysia on 14-15 March 2017. More information on how to get involved in shaping the content of the event can also be found at the PV CellTech 2017 website. Watch out soon for details on the agenda, which will be announced at the start of August on PV Tech, with an accompanying feature to explain the rationale and methodology involved.

Read Next

PV Tech Premium
June 16, 2021
As more traditional PERC cells and modules reach their limitations, Seraphim president Polaris Li discusses his company’s strategy for what he dubs the ‘post-PERC’ era of solar PV.
June 2, 2021
Solar cell manufacturer Maxwell Technologies has celebrated a record mass production efficiency for its heterojunction (HJ) solar cell.
June 1, 2021
Renewables investor Magnora AG has said it will increase its investment in perovskite solar specialist Evolar, taking a 40.7% stake in the company.
May 31, 2021
Researchers at the University of Sheffield have found a new way to extend the life of perovskite materials by more than three months, paving the way for new solar cell technologies.
May 10, 2021
LONGi Solar has set a record conversion efficiency of 25.09% for its N-type monocrystalline bifacial TOPCon cell that has been independently verified by the Institute for Solar Energy Research in Hamelin.
April 15, 2021
Maxeon Solar Technologies intends to raise up to US$143.75 million through a share issue to help finance planned capacity expansions and R&D, with long-time partner TZS committing to an investment.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
July 6, 2021
Solar Media Events
August 24, 2021
Solar Media Events, Upcoming Webinars
October 6, 2021