Silicon CPVSilicon CPV

Silicon CPVSilicon CPV

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Silicon CPV Plc Silicon CPV Plc Renewable Energy Technology CompanyRenewable Energy Technology Company

Silicon CPV

A Brief Introduction to Silicon CPVA Brief Introduction to Silicon CPV

Silicon CPV is a British Company

with a Long History of

Research & Development

and Manufacturing facilities in UK

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Silicon CPV

• Setting up of Akhter Group • Field: Electronics, Semiconductor, IT

SILICON CPV SILICON CPV HistoryHistory

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1979

2000• Akhter Group starts R&D in Photovoltaics

2007

2011

2013• Silicon CPV Launches a Range of Light Weight Solar Street Lights

based on Very High Efficiency Solar Cells and High Efficiency LEDs

• Akhter Group spins off specialist R&D Company - Silicon CPV

• Silicon CPV Awarded Research Grant to Develop its Patented Very High Efficiency Solar Cell by Technology Strategy Board UK

Silicon CPV

Silicon CPV’s R&D Facility in Harlow UKSilicon CPV’s R&D Facility in Harlow UK

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Silicon CPV

Silicon CPV’s R&D Facility in Harlow UKSilicon CPV’s R&D Facility in Harlow UK

Electro less Plating of Copper, Nickle and Silver on P-Type and N-Type Silicon

Laser Grooving Facility for Silicon Wafers

4 Tube Diffusion Furness

Wet Chemistry Lab

Ion Implant Facilities

Scanning Electron Microscope

Solar Cell Characterisation Lab11/03/15 5

Silicon CPV

Worldwide Patents & Research Worldwide Patents & Research

Silicon CPV has a Number of Worldwide Patents in the Field of Photovoltaics

Silicon CPV has been Awarded Research Grants by UK & Spanish Governments

Silicon CPV has done Collaborative R&D work with many Universities

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Silicon CPV

Current Projects Current Projects High Efficiency Low Cost All Back Contact Silicon Solar Cell

– Target 24% Efficiency – “HELICS”

Novel Design Solar Street Lights

High Efficiency and Scalable Solar MPPT Charge Controller

Energy Management Controller for Integration of Scalable Hybrid Power Plants – Grid, Solar, Wind, Diesel, Storage

Zig Bee Network based High Efficiency LED Lighting for Commercial Applications

Optics for Solar Street Lights

Water Desalination and Filtration using Solar Energy11/03/15 7

Silicon CPV

HELICS Solar Cell HELICS Solar Cell

“HELICS” is Silicon CPV’s Patented “All Back Contact” Solar Cell Device with Target Efficiency of 24%

Device is Produced Using Low Cost “Solar Grade” Commercially available P-Type Silicon

Processing Steps are compatible with current Volume Manufacturing Techniques

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Silicon CPV

HELICS Solar Cell StructureHELICS Solar Cell Structure

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Silicon CPV

HELICS Solar Cell Process StepsHELICS Solar Cell Process Steps

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Silicon CPV

Silicon Cells can’t transform the whole spectrum of sunlight into energy. Economic limit is at 28% efficiency

Multi Junction Cells with several III/V semiconductor layers can transform a much higher percentage.

Concentrator Technology Concentrator Technology

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Silicon CPV

• Multi Junction CellsUses Gallium Arsenide (GaAs III-V) Cells GaAs III-V Used in Space ProgramHigh Cost MaterialHigh Light > Energy Conversion43%+ Production Efficiency in 2014Can operate with Light at 2,000 Suns

Single Junction Monolithic Triple

Junction

MechanicallySeparated

Multi Junction

ConcentratorConcentrator Technology Technology

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Silicon CPV

Silicon CPV Technology Silicon CPV Technology • Single Junction Cells Laser Grooved Contact

Lower Shadowing Losses

Good Reflection Properties

Low Internal Resistance

Concentration Ratio 120:1

Existing Manufacturing Technology

High Heat Dissipation

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Silicon CPV

• Prismatic Lens Array of rectangular refractive prisms

781 varying size precision prisms

High energy uniformity at target

Low manufacturing cost

3 years development cycle

Greater than 80% efficiency

Silicon CPV Technology Silicon CPV Technology

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Silicon CPV

Silicon CPV Technology Silicon CPV Technology

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Silicon CPV

Silicon CPV Technology Silicon CPV Technology

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Silicon CPV

Silicon CPV Technology Silicon CPV Technology

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Silicon CPV

Silicon CPV Technology Silicon CPV Technology

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Silicon CPV

Application for “HELICS” Solar CellApplication for “HELICS” Solar Cell

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Silicon CPV

Silicon CPV - Solar Light TechnologySilicon CPV - Solar Light Technology• Very High Efficiency “HELICS” Solar Cells• Special Chemistry Long Life Lithium Batteries – 5 Years• Maximum Power Point Tracking Controller - MPPT• Proprietary LED drive Electronics that Achieves 180

Lumens per Watt• High Power, High Efficiency LEDs• Wireless Remote Monitoring and Control• Computer controlled Energy Management System• Specially Designed Optics to Direct Light on to Road

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Silicon CPV

A Basic Solar Street Light StructureA Basic Solar Street Light Structure

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Silicon CPV

Specifications of a Typical Solar LightSpecifications of a Typical Solar Light• 120W LED Source• 340W Photovoltaic Panel (2.5m² Area)• 2x200Ah Batteries – Weight 130Kg• Battery Life 2 Years• Light out put 8,000 Lumens• Actual Light on the Road area 6,000 Lumens• Total Weight 220Kg• Installation Requires Heavy Lifting Equipment

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Silicon CPV

Light Footprint from Typical Solar LightLight Footprint from Typical Solar Light

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Silicon CPV

Typical Assembly and Installation Typical Assembly and Installation

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Silicon CPV

Typical Assembly and Installation Typical Assembly and Installation

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Silicon CPV

And Finally – 220Kg on top of 10m PoleAnd Finally – 220Kg on top of 10m Pole

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Silicon CPV

Glare from Poor LED Light DesignGlare from Poor LED Light Design

Poor Design can also Results in

Strong Glare from the LED Lights

This can be Dangerous

for the Drivers

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Silicon CPV

Glare from LED Lights – Bad DesignGlare from LED Lights – Bad Design

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Silicon CPV

Light Footprint of Silicon CPV’s Solar Light Footprint of Silicon CPV’s Solar LightLight

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Silicon CPV

Silicon CPV’s Street Light OpticsSilicon CPV’s Street Light Optics

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Silicon CPV

Silicon CPV’s Highway Solar Light Silicon CPV’s Highway Solar Light

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Silicon CPV uses Specially Designed Optics to Direct Most of Light on to the

Road and also Reduces Glare

Silicon CPV

Silicon CPV’s High Way Solar LightSilicon CPV’s High Way Solar Light

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Silicon CPV

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