# 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. - [All Articles](Blog.html) - [Energy Storage & Applications 4](./Energy-Storage.html) - [Photovoltaics & Applications 118](./Photovoltaics.html) - [Electrical & Fundamentals 23](./Electrical-Fundamentals.html) - [Industry & Insights 22](./Industry-Insights.html) ## Our Latest Photovoltaics & Applications ![THBC Solar Cell Technology: How Hybrid Passivated Back](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1782294816770750.webp) - [** Jerry](./thbc-solar-cell-technology-how-hybrid-passivated-back-contact-breaks-the-28-efficiency-barrier.html) - [** 1015 Views](./thbc-solar-cell-technology-how-hybrid-passivated-back-contact-breaks-the-28-efficiency-barrier.html) ### THBC Solar Cell Technology: How Hybrid Passivated Back An in-depth blog exploring THBC hybrid passivated back contact solar cell techno··· ![Low-Light Performance: TOPCon vs BC vs HJT](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_ooitech-low-light-cell-technology-cover.webp) - [** Jerry](./low-light-performance-showdown-topcon-bc-and-hjt-backed-by-real-world-data.html) - [** 1064 Views](./low-light-performance-showdown-topcon-bc-and-hjt-backed-by-real-world-data.html) ### Low-Light Performance: TOPCon vs BC vs HJT A data-driven comparison of low-light performance across TOPCon, BC, and HJT sol··· ![BC, IBC, TBC, HBC, HPBC Full Forms Explained](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_db59acb060fb7b8b4e565a7473b5cb27.webp) - [** Jerry](./bc-ibc-tbc-hbc-hpbc-whats-the-connection-between-all-these-bc-technologies.html) - [** 1039 Views](./bc-ibc-tbc-hbc-hpbc-whats-the-connection-between-all-these-bc-technologies.html) ### BC, IBC, TBC, HBC, HPBC Full Forms Explained A clear explanation of the back contact (BC) solar cell family, including IBC, T··· ![Solar Anodizing: Why Frames Use Anodized Aluminum](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_7ea3e72c88cc48262dfff8c7287a7ac3.jpg) - [** Jerry](./why-anodizing-is-the-mainstream-surface-treatment-for-solar-frames.html) - [** 1000 Views](./why-anodizing-is-the-mainstream-surface-treatment-for-solar-frames.html) ### Solar Anodizing: Why Frames Use Anodized Aluminum An in-depth look at why anodizing has become the absolute mainstream surface tre··· ![Triple-Junction GaAs Solar Cell — Structure and Gains](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_ooitech-triple-junction-gaas-structure-cover.webp) - [** Jerry](./triple-junction-gaas-solar-cells-a-detailed-look-at-the-mainstream-space-photovoltaic-structure.html) - [** 1862 Views](./triple-junction-gaas-solar-cells-a-detailed-look-at-the-mainstream-space-photovoltaic-structure.html) ### Triple-Junction GaAs Solar Cell — Structure and Gains Triple-junction GaAs solar cell: how three stacked junctions split the spectrum,··· ![Photovoltaic Wafer Sizes: 100mm to 210mm Evolution](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_47386d3aeeba729a252de17a1d45577f.jpg) - [** Jerry](./the-evolution-history-of-photovoltaic-wafer-sizes.html) - [** 1292 Views](./the-evolution-history-of-photovoltaic-wafer-sizes.html) ### Photovoltaic Wafer Sizes: 100mm to 210mm Evolution How photovoltaic wafers grew from 100mm to 210mm, what each size change did to c··· ![Semi-Flexible Solar Panel Manufacturing Process](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_f731e49f5fdba64e4a3511accfacaf02.png) - [** Jerry](./semi-flexible-solar-panel-manufacturing-process-and-structure-explained.html) - [** 1327 Views](./semi-flexible-solar-panel-manufacturing-process-and-structure-explained.html) ### Semi-Flexible Solar Panel Manufacturing Process A detailed guide to semi-flexible solar panel manufacturing, exploring the 7-lay··· ![26.2% Certified Efficiency Breakthrough](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_78aceeaadb9724779d02aacde398672d.webp) - [** Jerry](./26-2-certified-efficiency-breakthrough-in-large-area-all-perovskite-tandem-modules-the-in2o3-nanocrystal-tunnel-recombination-junction.html) - [** 1380 Views](./26-2-certified-efficiency-breakthrough-in-large-area-all-perovskite-tandem-modules-the-in2o3-nanocrystal-tunnel-recombination-junction.html) ### 26.2% Certified Efficiency Breakthrough A solution-processed In2O3 nanocrystal tunnel recombination junction enables a J··· ![Solar Stringer Machine: How Tabber Stringers Work](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026061020186378.webp) - [** Margret](./how-a-tabber-and-stringer-works-and-how-to-choose-one-in-2026.html) - [** 2041 Views](./how-a-tabber-and-stringer-works-and-how-to-choose-one-in-2026.html) ### Solar Stringer Machine: How Tabber Stringers Work How to tell a real tabber stringer machine manufacturer from a trading company, ··· ![TOPCon Copper Plating Takes Another Step Forward: LIF](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_d53a498b3fd08dd9ba5da619b2597ec8.png) - [** Jerry](./topcon-copper-plating-takes-another-step-forward-lif-replaces-sintering-efficiency-0-45-abs-voc-damage-repaired.html) - [** 1101 Views](./topcon-copper-plating-takes-another-step-forward-lif-replaces-sintering-efficiency-0-45-abs-voc-damage-repaired.html) ### TOPCon Copper Plating Takes Another Step Forward: LIF A new 2026 paper from Jiangnan University, Jiangsu Xianghuan and DR Laser shows ··· - [**](/Photovoltaics_9.html) - ** ![](/template/ooitech/assets/img/shape/06.png) ![](https://cdn.ooitech.com/runtime/image/w800_h700_fitblur_v2_w800_h700_fitblur_v2_1757399770541443.webp) ### Request A Quote All uploads are secure and confidential. ## We deliver expertise you can trust our service Direct-from-Factory Equipment. ![](/template/ooitech/assets/img/icon/money-2.svg) ### Cost-Effective Advantages We deliver exceptional value, maximizing results while optimizing budgets for clients. ![](/template/ooitech/assets/img/icon/staff.svg) ### Our Experience Team Our skilled professionals specialize in innovative solutions and tailored strategies. ![](/template/ooitech/assets/img/icon/certified.svg) ### 15+ Years Industry Experience Deep expertise ensures reliable, trend-aware, and proven outcomes for success. ![](https://cdn.ooitech.com/static/upload/image/20250910/1757477357667605.webp ) ![](https://cdn.ooitech.com/static/upload/image/20250910/1757477724911512.webp) ![](/template/ooitech/assets/img/shape/06.png) ## What Our Client Say's about us Client testimonials praise our deep understanding of their challenges, which leads to innovative solutions and strong ROI. Long-term collaborations—some over a decade—demonstrate their trust and satisfaction. Their success stories drive us to continually exceed expectations. [Know More **](#quote-form) ![](/template/ooitech/assets/img/icon/quote.svg) Thanks to Ooitech for providing the fully automated production equipment—your installation and after-sales service have been excellent. ![](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026041720921238.webp) ### Amjad ![](/template/ooitech/assets/img/icon/quote.svg) A man with a big soul. Thank you very much for your visit Mr Wu. Thank you very much for the services provided in installing equipment and training my students. The kindest person and professional in his field ![](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026041716444445.webp) ### Jizzakh Polytechnic Institute ![](/template/ooitech/assets/img/icon/quote.svg) Thank you again so much again for the very big big help for improving and fixing the factory and also teaching the workers how to use the machines ![](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1757479675272137.webp) ### Mark BIPV Philippines ![](/template/ooitech/assets/img/icon/quote.svg) thank you for ooitech's professional support and on time after service. ![](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1784509010217979.webp) ### Diarra From Africa ![](/template/ooitech/assets/img/icon/quote.svg) Thanks to Ooitech for providing highly suitable BC solar cell experimental equipment. ![](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1776426122864564.webp) ### KTECH ## Our Latest Products ![OEL-S2400 Solar Panel EL Tester: 4928 x 3264px](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1774351284414161.webp) - [** Rachael](./solar-panel-el-defect-tester-oel-s2400-electroluminescence-testing-machine-for-solar-module-quality-inspection.html) - [** 60891](./solar-panel-el-defect-tester-oel-s2400-electroluminescence-testing-machine-for-solar-module-quality-inspection.html) ### OEL-S2400 Solar Panel EL Tester: 4928 x 3264px Ooitech OEL-S2400 Solar Panel EL Defect Tester is an offline electroluminescence testing machine designed to detect microcracks, black spots ![OPT-M960B EL & VI Tester: 0.1mm/pixel, Intel i7](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1774351816741704.webp) - [** Rachael](./solar-panel-el-tester-and-vi-tester-machine-opt-m960b-m951b-m950b-ooitech-solar-module-el-testing-equipment.html) - [** 43886](./solar-panel-el-tester-and-vi-tester-machine-opt-m960b-m951b-m950b-ooitech-solar-module-el-testing-equipment.html) ### OPT-M960B EL & VI Tester: 0.1mm/pixel, Intel i7 Ooitech offers professional solar panel EL tester and VI tester machines (OPT-M960B, OPT-M951B, OPT-M950B) with SONY industrial cameras ![Solar Panel Sealant and Tape: Silicone, Butyl, PET](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026032711586064.jpg.webp) - [** Rachael](./PV-Module-Sealant-Tape-Solutions-Essential-Components-for-Solar-Panel-Reliability.html) - [** 73369](./PV-Module-Sealant-Tape-Solutions-Essential-Components-for-Solar-Panel-Reliability.html) ### Solar Panel Sealant and Tape: Silicone, Butyl, PET Solar panel sealant and tape for module assembly: silicone frame sealant, butyl tape and busbar insulation tape, UV-resistant for 25-year outdoor exposure. ![Solar Panel Manufacturing Equipment: What to Buy First](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026032510951634.webp) - [** ooitech](./solar-panel-manufacturing-equipment.html) - [** 171](./solar-panel-manufacturing-equipment.html) ### 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. ![DH200-Y Automatic Bussing Machine: 17s Cycle Time](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1774348162498246.webp) - [** Rachael](./automatic-bussing-machine-dh200-y-solar-panel-busbar-soldering-equipment-ooitech.html) - [** 88030](./automatic-bussing-machine-dh200-y-solar-panel-busbar-soldering-equipment-ooitech.html) ### DH200-Y Automatic Bussing Machine: 17s Cycle Time Ooitech DH200-Y Automatic Bussing Machine delivers high-speed electromagnetic busbar soldering with 17s cycle time ![OPT-S110H Offline String EL Tester: ≤2s, 4.6MP](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_1774350940561245.webp) - [** Rachael](./offline-string-el-tester-opt-s110h-solar-cell-string-electroluminescence-testing-equipment-ooitech.html) - [** 88470](./offline-string-el-tester-opt-s110h-solar-cell-string-electroluminescence-testing-equipment-ooitech.html) ### OPT-S110H Offline String EL Tester: ≤2s, 4.6MP OPT-S110H Offline String EL Tester from Ooitech delivers high-speed electroluminescence inspection for solar cell strings up to 1250mm.