公开(公告)号：US20250055418A1

公开(公告)日：2025-02-13

申请号：US18722945

申请日：2022-12-16

Applicant: ELECTRICITE DE FRANCE ,  INSTITUT PHOTOVOLTAIQUE D'ILE DE FRANCE (IPVF) ,  TOTALENERGIES ONETECH ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS - ,  ECOLE POLYTECHNIQUE

Inventor： Jean-Baptiste PUEL ,  Arthur JULIEN ,  Jean-François GUILLEMOLES

IPC: H02S50/10 ,  G01R21/06

Abstract: A process for maximum power point tracking of a photovoltaic module, which includes monitoring the module's degradation by: for a periodicity n1δt0 with n1>1 constant or variable, steps of measuring parameters I and V of the module for points offset in voltage voltage VMPP+α and VMPP−β over the curve I(V) relative to the maximum power point MPP, calculating the slope dI/dV+ at the point VMPP+α and the slope dI/dV− at the point and VMPP−β and recording of the data with the MPP; for a periodicity n2δt0 with n2≥n1 of > of steps of measuring values I and V by sweeping the curve I(V) and calculating and storing the module's parameters and values; one or several steps of calculating, tracing and displaying of (p/2)
curves of data pairs based on p measured and calculated parameters; and one or more steps of detecting degradation from the measured and calculated parameters.

公开(公告)号：US11812621B2

公开(公告)日：2023-11-07

申请号：US17415692

申请日：2019-12-16

Applicant: TOTAL SE ,  ELECTRICITE DE FRANCE ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  ECOLE POLYTECHNIQUE ,  INSTITUT PHOTOVOLTAIQUE D'ILE DE FRANCE ,  L'AIR LIQUIDE SOCIETE ANONYME

Inventor： Florian Hilt ,  Philip Schulz ,  Etienne Drahi

IPC: H10K30/57 ,  H01L31/0475 ,  H01L31/0224 ,  H01L31/078

CPC classification number: H10K30/57 ,  H01L31/022433 ,  H01L31/022441 ,  H01L31/0475 ,  H01L31/078

Abstract: The present invention refers to a three terminal tandem solar generation unit (1) comprising: —a first absorbing layer (7) made of a perovskite type compound, —a second absorbing layer (11, 11′), —a first and a second interdigitated front contacts (5a, 5b) arranged on the front side of the first absorbing layer (7), the first front contact (5a) having a first polarity and the second front contact (5b) having a second polarity, —a back contact (17, 17′) having the first or the second polarity arranged on the back side of the second absorbing layer (11, 11′), —an interface layer (9, 90, 9′, 90′) arranged between the first (7) and the second (11, 11′) absorbing layers comprising a first semiconductor sub-layer (9a, 90a, 9a′, 90a′) doped according to the first polarity and a second sub-layer (9b, 90b, 9b′, 90b′) doped according to the second polarity and configured for enabling carriers associated with a polarity different than the polarity of the back contact (17, 17′) to be transferred from the second absorbing layer (11, 11′) to the first absorbing layer (7) to be collected by the front contact (5a, 5b) having a polarity different than the polarity of the back contact (17, 17′).

公开(公告)号：US20250164402A1

公开(公告)日：2025-05-22

申请号：US18948659

申请日：2024-11-15

Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  INSTITUT PHOTOVOLTAIQUE D'ILE DE FRANCE ,  ELECTRICITE DE FRANCE ,  TOTALENERGIES ONETECH ,  ECOLE POLYTECHNIQUE

Inventor： Mateusz POPLAWSKI

IPC: G01N21/64

Abstract: A method and device for determining effective electron lifetime in a component to be analysed, including emitting an excitation light beam with pulses, detecting a photoluminescence light emitted by the component in response to the excitation light beam, and for each of said pulses of the excitation light beam, calculating an effective electron lifetime value based on a temporal shift between this pulse and a corresponding pulse of the photoluminescence light.

公开(公告)号：US20220037547A1

公开(公告)日：2022-02-03

申请号：US17298793

申请日：2019-11-25

Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  ELECTRICITE DE FRANCE ,  TOTAL SE ,  RIBER ,  INSTITUT PHOTOVOLTAIQUE D'ILE DE FRANCE

Inventor： Ahmed BEN SLIMANE

IPC: H01L31/0735 ,  H01L31/075 ,  H01L31/0304 ,  H01L31/0725

Abstract: The present invention refers to a photovoltaic cell (1) comprising a heterojunction with a base layer (L4, L4′, L4″) made from an Aluminium-Ar-senic-basedalloy and an emitter layer (L3, L3′) made from an Indium-Phosphorous based alloy wherein the emitter layer (L3, L3′) has a thickness smaller than 100 nm and acts as a passivation layer to prevent oxidation of the base layer and reduces surface recombination (L4, L4′, L4″).

公开(公告)号：US20240322746A1

公开(公告)日：2024-09-26

申请号：US18577749

申请日：2022-07-05

Applicant: INSTITUT PHOTOVOLTAIQUE D'ILE DE FRANCE (IPVF) ,  ELECTRICITE DE FRANCE ,  TOTALENERGIES ONETECH ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS - ,  ECOLE POLYTECHNIQUE

Inventor： Jean-Baptiste PUEL ,  Arthur JULIEN

IPC: H02S20/32 ,  H01L31/043 ,  H01L31/0687 ,  H02S40/36

CPC classification number: H02S20/32 ,  H01L31/043 ,  H01L31/0687 ,  H02S40/36

Abstract: A method for maximizing the current produced by a bifacial photovoltaic solar module including a plurality of cells, each having at least two stacked and series-connected junctions, the module being capable of orientation and including a device for driving its orientation with respect to the sun. The method includes an algorithm including measuring the module's irradiance at the upper face (Ai) on its upper photoactive face, reflective irradiance (Ar) on its lower photoactive face in its initial orientation, and initial current I from the irradiances Ai and Ar, and calculating currents Ijg generated by the stacked junctions from the cells' physical characteristics and I, calculating an optimized theoretical orientation for which equalization and maximization of the theoretical currents Ijtmax is obtained, and positioning the module in the theoretical orientation when an imbalance between Ijtmax and Ijg is greater than a threshold value dIjmax. A module designed for this method.

公开(公告)号：US20230421094A1

公开(公告)日：2023-12-28

申请号：US18253087

申请日：2021-11-19

Applicant: ELECTRICITE DE FRANCE ,  INSTITUT PHOTOVOLTAIQUE D'ILE DE FRANCE (IPVF) ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS - ,  TOTALENERGIES SE ,  ECOLE POLYTECHNIQUE

Inventor： Sébastien JUTTEAU ,  Pierre-Philippe GRAND ,  Cédric GUERARD ,  Etienne DRAHI

IPC: H02S30/00 ,  H02S50/10 ,  H02S40/36

CPC classification number: H02S30/00 ,  H02S50/10 ,  H02S40/36

Abstract: A method for optimizing an existing generator system based on photovoltaic cells and provided with an existing photovoltaic panel or a group of existing photovoltaic panels, each panel having a first plurality of cells of a first type interconnected in series or in series/in parallel. The method includes: determining an operating voltage of the panel(s); producing additional panel module(s) having a second plurality of thin-film cells of a second type and having a different band gap width than the cells of the panel(s), the additional module(s) being configured to supply an operating voltage equal, within ±10%, to the voltage of the panel(s); positioning the additional module to overlap on or under the panel or one of the panel(s), the module being connected in parallel to the panel(s), or positioning several additional modules to overlap on or under several panels, the several modules being connected in parallel to panels.