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Gallery View: Conversion efficiency, reliability key for solar panel module R&D
Global SourcesUpdated on 2023/12/01
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The use of cells based on silicon alternatives with higher energy yield is gaining traction in the production of solar panel modules.
The push for higher conversion efficiency and reliability remains a strong trend in R&D efforts on solar panel modules. This has led to the adoption of solar cells that use nonsilicon semiconductor materials such as gallium arsenide (GaAs), gallium indium phosphide (GaInP) and copper indium selenide (CIS). These outperform silicon-based monocrystalline and polycrystalline cells in terms of efficiency and reliability, in addition to being lightweight and flexible owing to the thin-film technology used.
Thin-film solar panel modules are also gaining suppliers' attention in China. However, at present, only a few are engaged in the development and production of GaInP and CIS kinds due to the high technology threshold.
Current manufacturing emphasis is on monocrystalline and polycrystalline panels. The former type has comparatively higher conversion efficiency and reliability and a longer operating life span but is more expensive. Amorphous silicon solar panel modules are also part of the product range in China, offered as a low-cost option to polycrystalline types.
Chinese companies target residential, commercial, traffic, communications and automotive applications, and solar power plants.
They source materials such as tempered glass, EVA and TPT from domestic providers, while solar cells are manufactured in-house or outsourced. Despite an increase in input costs, most suppliers kept their product prices flat in 2020 to stay competitive, according to companies interviewed by Global Sources Electronic Components. Product prices are expected to stabilize in the coming months and through early 2022.
Monocrystalline, 18V, 1.66A maximum ratings
Shenzhen Juguangneng Science & Technology Co. Ltd's 30W monocrystalline solar panel module, the JGN-30W-18M, has 18V and 1.66A maximum power voltage and current, 21.6V open-circuit voltage and 1.8A short-circuit current.
The supplier requires an order of 10 units. Delivery is within 15 days.
Polycrystalline, 20W power rating
This JGN-20W-18P-1 polycrystalline solar panel module from Shenzhen Juguangneng Science & Technology Co. Ltd has 20W power. Its maximum power and open-circuit voltages are 18V and 21.6V. The maximum power current is 1.11A and short-circuit current 1.2A.
The minimum order quantity is 10 units. Lead time is 15 days.
Semi-flexible, 21 to 26.5% efficiency
The SRFZ156S18-100-7733 from Sopray Solar Group Co. Ltd is an IP68-rated semi-flexible solar panel module that bends up to 20 degrees. Its efficiency rating is 21 to 26.5 percent. This 18V, 5.55A unit, with 100W maximum power, has 21.06V open-circuit voltage and 5.58A short-circuit current. It operates in -20 to 55 C. Applications include RVs, boats and bus stations.
An order of at least 10 units is required. This has a 20-day lead time.
Monocrystalline, 16.15% cell efficiency
From Sopray Solar Group Co. Ltd, this SR125M-80watt Mono Panel solar panel module has 16.15 percent cell efficiency. It has 80W maximum power, 18V maximum power voltage, 21.6V open-circuit voltage and 4.84A short-circuit current. Operating temperature is -40 to 85 C.
The 100-unit minimum order requirement has a lead time of 12 days.
Polycrystalline, 16.59% module efficiency
Model YH270W-30-P polycrystalline solar panel module from Zhejiang Isola New Energy Co. Ltd has 16.59 percent module and 18.87 percent cell efficiency, and ±3 percent power tolerance. Its maximum power voltage and current are 31.26V and 8.64A, and the peak power is 270W. Operating temperature is -40 to 85 C. This product meets CE, CQC and UL standards.
The minimum order is 10 units for delivery within 10 days.
Monocrystalline, 20.7% module efficiency
Zhejiang Isola New Energy Co. Ltd markets this YH450W-36M monocrystalline solar panel module with 450W peak power and 20.7 percent module efficiency. The unit, with -40 to 85 C operating temperature, has 41.5V and 10.85A maximum power voltage and current. It meets CE, CQC and UL requirements.
The supplier requires an order of 10 units. Lead time is 10 days.
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