• Energy Research

Organic photovoltaics (OPVs) have a promising future in reliable energy harvesting to drive low power consumption devices for indoor applications.

Organic photovoltaics (OPVs) have a promising future in reliable energy harvesting to drive low power consumption devices for indoor applications.

At present, low long-term stability is the main limitation for organic solar cells. The origin of the degradation of high-efficiency non-fullerene solar cells by impedance spectroscopy and its degradation mechanisms has been investigated.

At present, low long-term stability is the main limitation for organic solar cells. The origin of the degradation of high-efficiency non-fullerene solar cells by impedance spectroscopy and its degradation mechanisms has been investigated.

Combined impedance spectroscopy and photovoltage/photocurrent transient techniques with dark J–V modelling was employed to study the shelf ISOS-D1 stability of organic solar cells.

Combined impedance spectroscopy and photovoltage/photocurrent transient techniques with dark J–V modelling was employed to study the shelf ISOS-D1 stability of organic solar cells.

This report a novel and straightforward architecture of CaTiO3based solar cells with optimized hole transport material (HTM) properties. The perovskite CaTiO3particle was prepared via the solution process using different CaCO3/TiO2ratios. The design of CaTiO3-based solar cell follows the inverted architecture, in which poly (4-styrene sulfonate)-doped poly (3, 4-ethylenedioxy-thiophene (PEDOT:PSS) and PCBM-C70 were used as HTM and electron transport layer (ETL), respectively. Charge mobility of HTM was modified and improved by using either ethylene glycol (EG) or diethylene glycol (DEG). The optimum condition of CaTiO3-based solar cell was obtained using CaCO3/TiO2ratio of (1:7) annealed at 900 °C and 44.4 % (v/v) DEG-modified PEDOT/PSS. The conversion efficiency of 3.1 % with a stable solar cell performance up to 72 h under the ambient condition without encapsulation was achieved.

This report a novel and straightforward architecture of CaTiO3based solar cells with optimized hole transport material (HTM) properties. The perovskite CaTiO3particle was prepared via the solution process using different CaCO3/TiO2ratios. The design of CaTiO3-based solar cell follows the inverted architecture, in which poly (4-styrene sulfonate)-doped poly (3, 4-ethylenedioxy-thiophene (PEDOT:PSS) and PCBM-C70 were used as HTM and electron transport layer (ETL), respectively. Charge mobility of HTM was modified and improved by using either ethylene glycol (EG) or diethylene glycol (DEG). The optimum condition of CaTiO3-based solar cell was obtained using CaCO3/TiO2ratio of (1:7) annealed at 900 °C and 44.4 % (v/v) DEG-modified PEDOT/PSS. The conversion efficiency of 3.1 % with a stable solar cell performance up to 72 h under the ambient condition without encapsulation was achieved.