Improving interface quality for 1-cm2 all-perovskite tandem solar cells

Effect of Hole Transport Materials and Their Dopants on the Stability and Recoverability of Perovskite Solar Cells on Very Thin Substrates after 7 MeV Proton Irradiation

“…In addition, bandgaps of perovskites are tunable making them suitable for multijunction tandems with high power conversion efficiencies (PCEs). The highest efficiencies for single-junction perovskite and double junction perovskite-perovskite solar cells are now 25.7% (certified) [27] and 26.4% (certified), [28,29] respectively indicating ample room for improvement given the efficiency limits for double and triple junction tandems are 45% and 53%, respectively. [30] Global internet constellations on low earth orbits and in the vicinity [31,32] are the fastest growing market segment for space photovoltaics in the coming decade approaching gigawatt (GW) installations.…”

Recent advances in electrode interface modifications in perovskite solar cells

“…Currently, both p–i–n structure single-junction PSCs and all-perovskite tandem solar cells with the highest PCEs use the thermal-evaporated BCP as the cathode interlayer because it effectively lowers the carrier recombination at the cathode interface. 11,62,63 However, this organic BCP layer leads to a rapid loss of device efficiency when tracking the stability (Fig. 4(b)), due to the crystallization of the thermally evaporated BCP layer under thermal stress, which can be observed from the morphological change before and after thermal aging under 85 °C for 12 h (Fig.…”

“…SAM of organic small molecules that can modify the TCO anode has been employed in the highest efficiency p–i–n PSCs and perovskite-based tandem solar cells. 11,62 Such organic small molecules have functions as hole-extracting layers, which can also contact the perovskite layer directly and passivate interfacial defects, depending on their chemical structure and groups. 86 We have listed the reported representative passivating agents in Table 1 according to their molecular functional groups.…”

“…4–10 These properties enable the fabrication of perovskite solar cells (PSCs) with low cost and high power-conversion efficiency (PCE). 11–13 Since the first report of PSCs with a PCE of 3.8% in 2009, single-junction PSCs have achieved rapidly increasing efficiency to a certified 26.0% in the last decade, and perovskite-based tandem solar cells such as perovskite/Si tandems have reached 33.7%. 14 These achievements make PSCs one of the most promising candidates for the next-generation PV market.…”

Reduced open-circuit voltage deficit in wide-bandgap perovskite solar cells enabled by thiazolidine-based interfacial engineering

“…Single-junction perovskite solar cells (PSCs) have achieved a certified power conversion efficiency (PCE) of 25.8% from the initial 3.8%, approaching the theoretical Shockley–Queisser (S–Q) efficiency limit. 1–3 To break the S–Q limit, constructing perovskite-based tandem solar cells (TSCs), such as perovskite-silicon (Si), 4,5 perovskite-copper indium gallium diselenide (CIGS), 6 and perovskite-perovskite TSCs, 7 is the most effective strategy to further improve the PCE of solar cells. In particular, perovskite-Si TSCs, consisting of wide-bandgap (WBG) perovskite top cells with a bandgap of 1.65–1.70 eV and Si bottom cells, have realized a remarkable certified PCE of 33.2%, 2 which shows great potential to develop perovskite-Si TSCs.…”