Mid-Term of photoNvoltaicsWelcome!

Mid-term review – M18

24 April 2014, Namur (@UNamur)

N-type (emitter)P-type (base)

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A brief introduction

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Why photoNvoltaics? Project goals

Who is photoNVoltaics? Complementary partners

How does photoNvoltaics work? WP split

Where is photoNvoltaics? Global work progress

What are we doing today? Agenda of the day

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Wafer-based c-Si solar cell Photonic nanostructure

Thin-film c-Si solar cell

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The main (ambitious) goals

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• Thin c-Si film breaking the Yablonovitch limit

• Is periodic better than random?

Optical demonstration

• Cell with highest Jsc enhancement ever

Cell demonstration

• Integrate nanoscale litho into PV

PV industry

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7 competences required

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Supply of thin films

Modelling of advanced photonics structures

Patterning of structures

Controlled etching of Si

Integration into efficient cells

Characterisation of materials and

devices

Opening the way to industry

nanophotonics for ultra-thin crystalline silicon photovoltaics

This project has received funding from the European Union’s Seventh Programme for research, technological development and demonstration under grant agreement No 309127

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A simple management structure

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Work split into 5 work packages

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WP goals

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o Pattern with various techniques o of litho and etcho periodic and non-periodic

o Characterise the patternso Find how to passivate them

WP2

o Model various nanopatterned structures and extract their Jsc

o Give guidelines of optimal structures

o Gather reliable data for modelso Define benchmark structures

WP1

o Fabricate thin c-Si filmso Integrate nanopatterns into solar cells

and reach record Jsc valueso Demonstrate upscalability

WP3o Evaluate industrialiability of

nanopatterningo Evaluate their costs and lifecycleo Disseminate results and protect IP

WP4

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A brief introduction

confidential

Why photoNvoltaics? Project goals

Who is photoNVoltaics? Complementary partners

How does photoNvoltaics work? WP split

Where is photoNvoltaics? Global work progress

What are we doing today? Agenda of the day

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Work plan for record devices

imec confidential

1) Get a “flavour”

2) First optimisation

3) Go for record

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Epi

LIL

Optics

NIL

HCL

Charac

PECVD

Many samples exchanged across Europe

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61 batches of samples so far

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Where are we now?In the eye of the hurricane...

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Where are we now?

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From milestone to milestone...On track so far

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Milestone number Milestone name WPs involved

Expected date

MS 1

Thin c-Si wafers for testing nanopatterning in WP2 with LHL, HCL and NIL

3 M3 Jan13

MS 2 Internal website for data exchange 5 M3 Jan13

MS 3 Decision on first optically optimised periodic structures for NIL master stamps fabrication (cf. D 1.4)

1 M12 Oct13

MS 4 Decision on experimental fabrication of double-side patterned samples (cf. D 1.6)

1 M18 Apr14

MS 5

Opto-electrical simulation tool established

1 M21 July14today

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Deliverables: Sometimes delayed, mostly on track

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Del. No

Deliverable title WP No Nature Delivery date (projected

month)

Lead beneficiary

Estimated Person-months

D 1.1 Database of optical data for modelling

1 O 3- Jan 13 2b CNRS-LPICM 2.1

D 1.2 Report: Solar cells to be modelled 1 R 3- Jan 13 1 Imec 2

D 1.3 Report: Benchmark structures to be modelled

1 R 3- Jan 13 1 Imec 2

D 5.1 IT tools for internal communication 5 O 3- Jan 13 1 Imec 3

D 4.1 Public website 4 O 3- Jan 13 1 Imec 0.6D 2.1 Report: Experimental boundary

conditions for periodic patterns2 R 10- Aug 13 2a INL 8.3

D 2.2 Report: Experimental boundary

conditions for non-periodic patterns

2 R 12- Oct 13 5 Chalmers 5.3

D 1.4 Report: Model validation for periodic patterns

1 R 12- Oct 13 2a INL 18

D 2.3 Report: Surface passivation methods

2 R 12- Oct 13 1 Imec 15.4

D 3.1 Report: Layer transfer possibilities 3 R 12- Oct 13 2b LPICM 7

D 1.5 Report: Model validation for non-periodic patterns

1 R 17- Mar 14 3 FUNDP 23

D 1.6 Report: Modelled potential of double-side patterning

1 R 18- Apr 14 2a INL 5

D 3.2 Report: First batch of solar cells, non-optimised optically

3 R 18- Apr 14 1 Imec 15

2 months delay... from summer holidays

today

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Morning agenda

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8h30 Welcome breakfast

9h Introduction 30 min Valerie(imec)

9h30 WP1: Modelling & benchmarking 1h15 Jerôme (UNamur)

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10h45 Coffee break 20 min

11h05 WP2: Nanopatterning 1h15Christian(CNRS-INL)

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12h20 Lunch break > 60 min

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Afternoon agenda

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13h45 WP3: Integration of nanophotonics into thin-film c-Si solar cells

1h15Pere(CNRS-LPICM)

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15h Coffee break 20 min

15h20 WP4: Dissemination, Exploitation and Cost Calculation

45 min Patricia (Total)

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16h05 WP5: Coordination & Management Wrap up

30 minValérie(imec)

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16h35 Coffee break 20 min

~17h Reviewer discussion and feedback 60 minReviewer / EC

nanophotonics for ultra-thin crystalline silicon photovoltaics

This project has received funding from the European Union’s Seventh Programme for research, technological development and demonstration under grant agreement No 309127