# Photovoltaics & Applications | Ooitech Technical Blog

> Cell and module technology explained: TOPCon, BC, HJT and perovskite routes, the materials used, the machines that build them and the process behind every watt.

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- [Industry & Insights 22](./Industry-Insights.html)

## Our Latest Photovoltaics & Applications

![How to Tell If Semi-Tempered Glass Cracking](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_4d1dc0c00c34a315f969ca06893cfd5f.webp)

- [** Jerry](./how-to-tell-if-semi-tempered-glass-cracking-in-dual-glass-modules-is-spontaneous-breakage.html)
- [** 295 Views](./how-to-tell-if-semi-tempered-glass-cracking-in-dual-glass-modules-is-spontaneous-breakage.html)

### How to Tell If Semi-Tempered Glass Cracking

Glass breakage tops PV module complaints. Here is how to judge whether a dual-gl···

![PV Cell Metallization: Can](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_d05e25081ca62dd79cc7d724a9e95c9d.webp)

- [** Jerry](./pv-cell-metallization-can-the-silver-blocking-playbook-be-used-to-stop-copper.html)
- [** 301 Views](./pv-cell-metallization-can-the-silver-blocking-playbook-be-used-to-stop-copper.html)

### PV Cell Metallization: Can

Silver prices are surging again and PV is feeling the pain. This blog looks at w···

![How Silver Paste Bites Through poly-Si on TOPCon Rear Side](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_53eafcaf488a6278ffff7ea894bf8d5d.webp)

- [** Jerry](./how-silver-paste-bites-through-poly-si-on-the-topcon-rear-side.html)
- [** 324 Views](./how-silver-paste-bites-through-poly-si-on-the-topcon-rear-side.html)

### How Silver Paste Bites Through poly-Si on TOPCon Rear Side

A deep dive into how rear silver paste penetrates poly-Si on TOPCon cells, why s···

![How One Laser Step Forced](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_75eafe41adc24b5afc9f69f3cb85bf75.webp)

- [** Jerry](./how-one-laser-step-forced-the-whole-front-side-silver-paste-to-change-its-blood.html)
- [** 293 Views](./how-one-laser-step-forced-the-whole-front-side-silver-paste-to-change-its-blood.html)

### How One Laser Step Forced

A deep look at why the LECO laser process pushed TOPCon front metallization from···

![Temperature Degradation and LeTID Dynamics](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_a8adf265f7515168f4c96a95b10b7736.gif)

- [** Jerry](./temperature-degradation-and-letid-dynamics-in-n-type-back-contact-solar-cells.html)
- [** 254 Views](./temperature-degradation-and-letid-dynamics-in-n-type-back-contact-solar-cells.html)

### Temperature Degradation and LeTID Dynamics

A deep dive into temperature-driven degradation and LeTID dynamics in n-type IBC···

![Why TOPCon Four-Cut Modules Need Two-Part Junction](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1231c4401fd258e7fa16b300db3938be.webp)

- [** Jerry](./why-topcon-four-cut-modules-need-two-part-junction-boxes-a-look-at-pv-junction-box-evolution.html)
- [** 340 Views](./why-topcon-four-cut-modules-need-two-part-junction-boxes-a-look-at-pv-junction-box-evolution.html)

### Why TOPCon Four-Cut Modules Need Two-Part Junction

A clear walkthrough of how PV junction boxes evolved from single-box to three-pa···

![Why Do BC Solar Cell Strings Warp Like a Boat?](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2a1a74f9f0b202fee953faca28401044.webp)

- [** Jerry](./why-do-bc-solar-cell-strings-warp-like-a-boat.html)
- [** 377 Views](./why-do-bc-solar-cell-strings-warp-like-a-boat.html)

### Why Do BC Solar Cell Strings Warp Like a Boat?

A close look at why BC solar cell strings curve like a boat during module manufa···

![Why is Flux Essential for Photovoltaic Soldering?](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_21249808d49db08d61ebd8d0d2409aa4.webp)

- [** Jerry](./why-is-flux-essential-for-photovoltaic-soldering.html)
- [** 346 Views](./why-is-flux-essential-for-photovoltaic-soldering.html)

### Why is Flux Essential for Photovoltaic Soldering?

Understand the critical role of flux in photovoltaic soldering. Learn how it cle···

![Why Do BC Solar Cells Need Insulating Glue on the Back?](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_b8a7084bc52fc022c4ab73d905894ab9.webp)

- [** Jerry](./why-do-bc-solar-cells-need-insulating-glue-on-the-back.html)
- [** 273 Views](./why-do-bc-solar-cells-need-insulating-glue-on-the-back.html)

### Why Do BC Solar Cells Need Insulating Glue on the Back?

Discover why Back Contact (BC) solar cells require insulating glue on the back. ···

![PL Smudges, Blistering, and Boat Marks: Which Step](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_e566f3c774b4a2727579fff5446fffe4.webp)

- [** Jerry](./pl-smudges-blistering-and-boat-marks-which-step-to-check-first.html)
- [** 314 Views](./pl-smudges-blistering-and-boat-marks-which-step-to-check-first.html)

### PL Smudges, Blistering, and Boat Marks: Which Step

A technical deep dive into how summer humidity causes solar cell passivation def···

![The Bottleneck in Fine-Line Screen Printing](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_a86b72149c091dbf107286044ae35306.webp)

- [** Jerry](./the-bottleneck-in-fine-line-screen-printing-is-hidden-in-the-paste.html)
- [** 333 Views](./the-bottleneck-in-fine-line-screen-printing-is-hidden-in-the-paste.html)

### The Bottleneck in Fine-Line Screen Printing

A technical review of Fraunhofer ISE research on fine-line front-side printing f···

![Why BC Solar Cells Are More Prone to Bowing and Warpage](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_e9c9b635b35cd54158de957280d13447.webp)

- [** Jerry](./why-bc-solar-cells-are-more-prone-to-bowing-and-warpage.html)
- [** 323 Views](./why-bc-solar-cells-are-more-prone-to-bowing-and-warpage.html)

### Why BC Solar Cells Are More Prone to Bowing and Warpage

A technical review of why BC solar cells are more susceptible to bowing and warp···

- [**](/Photovoltaics_4.html)
- [**](/Photovoltaics_6.html)

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## Our Latest Products

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### SC-20P BC Cell Laser Cutting Machine

SC-20P is an upgraded laser cutter based on SC-20A, designed for BC cells. It synchronously cuts both the cell and protective paper into 1/2 pieces

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Ooitech offers professional solar panel EL tester and VI tester machines (OPT-M960B, OPT-M951B, OPT-M950B) with SONY industrial cameras

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### EVA Encapsulant Film: 80 N/cm Peel, EVA vs POE vs EPE

EVA encapsulant film for solar modules, plus POE and EPE options: anti-PID, UV-resistant and compatible with TOPCon and PERC lines, in your thickness.

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### Solar Panel Manufacturing Equipment: What to Buy First

Solar panel manufacturing equipment buying guide: core stations vs auxiliary plant, what to buy later, budget phasing, spares, FAT/SAT, vendor checks.

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### SS-2500B Tabber and Stringer: 2400 Cells/h, 3-20BB

SS-2500B full automatic tabber stringer machine for crystalline silicon solar cells with 2400PCS/H capacity, featuring infrared soldering

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### SS-1500B Solar Cell Tabber Stringer: 1200 Cells/h

SS-1500B automatic solar cell welding machine by Ooitech - High-performance tabber stringer for BC, TOPCON, PERC
