Wide-bandgap organic–inorganic hybrid and all-inorganic perovskite solar cells and their application in all-perovskite tandem solar cells

Abstract

The past decade has witnessed rapid development of perovskite solar cells (PSCs), the record power conversion efficiency (PCE) of which has been rapidly boosted from the initial 3.8% to a...

Van der Waals Epitaxial Growth for High Performance Organic‐Free Perovskite Solar Cell: Experimental and Theoretical Insights

“…[12] Br (Bromide)-rich inorganic perovskites, i.e., CsPbBr 3 and CsPbIBr 2 are intrinsically more stable as compared to former compositions, but the wide bandgap of CsPbBr 3 (2.3 eV) results in the inadequate light absorption and meager device (PSC) performance. [10,13] Moreover, Br-rich IPSCs can generate a high open-circuit voltage (V OC ), [14,15] which is beneficial to develop tandem PSCs and catalytically active devices for water splitting. [14,16] Wide bandgap perovskites have the potential to enhance the stability of bottom cells against ultraviolet radiation and act as filters in tandem cell configurations.…”

“…[10,13] Moreover, Br-rich IPSCs can generate a high open-circuit voltage (V OC ), [14,15] which is beneficial to develop tandem PSCs and catalytically active devices for water splitting. [14,16] Wide bandgap perovskites have the potential to enhance the stability of bottom cells against ultraviolet radiation and act as filters in tandem cell configurations. [14] CsPbIBr 2 with a wide bandgap of 2.03 eV is a nice choice with enhanced phase stability, suitable absorption threshold and its immunity to withstand heat, illumination, and humidity mishmashes, [17,18] which is also the research focus of this work.…”

“…[14,16] Wide bandgap perovskites have the potential to enhance the stability of bottom cells against ultraviolet radiation and act as filters in tandem cell configurations. [14] CsPbIBr 2 with a wide bandgap of 2.03 eV is a nice choice with enhanced phase stability, suitable absorption threshold and its immunity to withstand heat, illumination, and humidity mishmashes, [17,18] which is also the research focus of this work. As the matter of fact, the highest reported PCE of CsPbIBr 2 is still far away from its theoretical values (17.25%), [7,8] which is attributed to substantial nonradiative and interface recombination of photo-enhanced charge carriers.…”

Performance-Enhancing Sulfur-Doped TiO2 Photoanodes for Perovskite Solar Cells

“…Perovskite solar cells (PSCs) have been attracting great attention in the past decade due to their rise in power conversion efficiencies (PCE), with certified efficiencies now greater that 25% [1][2][3][4][5]. A typical PSC consists of multiple layers of solid thin films, which include an electron transport layer (ETL), perovskite absorber layer and hole transport layer (HTL).…”

Low-Bandgap Mixed Tin–Lead Perovskite Solar Cells

“…The certified power conversion efficiency (PCE) of single-junction perovskite solar cells (PSCs) has been increased to 25.7% in just a decade, approaching the Shockley-Queisser (S-Q) limits [4]. Perovskite/perovskite (all-perovskite) tandem solar cells (TSCs), consisting of wide-bandgap (E g ~1.7-1.9 eV) top subcells and low-bandgap (E g ~1.2-1.3 eV) bottom subcells, have the potential to break the S-Q limits [5][6][7][8]. The PCEs of wide-E g top cells have been significantly improved through unremitting efforts.…”