公开(公告)号：US20210075219A1

公开(公告)日：2021-03-11

申请号：US17013257

申请日：2020-09-04

Applicant: First Solar, Inc.

Inventor： Dmitry Krasikov

IPC: H02J3/38

Abstract: The efficiency of a photovoltaic device is enhanced by operating the device in a dark bias mode during a dark period, and in a power generation mode during a subsequent illuminated period. The dark period occurs when an insufficient amount of irradiance is received by the photovoltaic device to produce a useful amount of generated power. In the dark bias mode, a forward DC biasing current is applied to the photovoltaic device, and the device consumes a small current. In the power generation mode, the forward bias is not applied to the photovoltaic device, and the photovoltaic device generates a current in a direction opposite to that of the forward biasing current that was applied during the preceding dark period.

公开(公告)号：US20210359152A1

公开(公告)日：2021-11-18

申请号：US17319989

申请日：2021-05-13

Applicant: First Solar, Inc.

Inventor： Dmitry Krasikov ,  Sachit Grover ,  Igor Sankin

IPC: H01L31/18 ,  H01L31/0296 ,  H01L31/06

Abstract: According to embodiments provided herein, the performance of photovoltaic device can be improved by rapidly heating an absorber layer of a device in open-circuit to a high temperature for a short period of time followed by rapid quenching. The rapid heating may be accomplished by one or more pulses of high intensity electromagnetic energy. The energy may be visible light. The energy may be absorbed primarily in the absorber layer, such that the absorber layer is preferentially heated, promoting chemical reactions of dopant complexes. The dopant chemical reactions disrupt compensating defect complexes that have formed in the device, and regenerate active carriers.

公开(公告)号：US11870002B2

公开(公告)日：2024-01-09

申请号：US17319989

申请日：2021-05-13

Applicant: First Solar, Inc.

Inventor： Dmitry Krasikov ,  Sachit Grover ,  Igor Sankin

IPC: H01L31/18 ,  H01L31/06 ,  H01L31/0296 ,  H01L31/073

CPC classification number: H01L31/1864 ,  H01L31/02963 ,  H01L31/06 ,  H01L31/073

Abstract: According to embodiments provided herein, the performance of photovoltaic device can be improved by rapidly heating an absorber layer of a device in open-circuit to a high temperature for a short period of time followed by rapid quenching. The rapid heating may be accomplished by one or more pulses of high intensity electromagnetic energy. The energy may be visible light. The energy may be absorbed primarily in the absorber layer, such that the absorber layer is preferentially heated, promoting chemical reactions of dopant complexes. The dopant chemical reactions disrupt compensating defect complexes that have formed in the device, and regenerate active carriers.

公开(公告)号：US11289915B2

公开(公告)日：2022-03-29

申请号：US17013257

申请日：2020-09-04

Applicant: First Solar, Inc.

Inventor： Dmitry Krasikov

IPC: H02J3/38 ,  H01L31/0296

Abstract: The efficiency of a photovoltaic device is enhanced by operating the device in a dark bias mode during a dark period, and in a power generation mode during a subsequent illuminated period. The dark period occurs when an insufficient amount of irradiance is received by the photovoltaic device to produce a useful amount of generated power. In the dark bias mode, a forward DC biasing current is applied to the photovoltaic device, and the device consumes a small current. In the power generation mode, the forward bias is not applied to the photovoltaic device, and the photovoltaic device generates a current in a direction opposite to that of the forward biasing current that was applied during the preceding dark period.