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Here, the robustness of perovskite-silicon tandem solar cells to reverse bias electrical degradation down to −40 V is investigated. The two-terminal tandem configuration, with the perovskite coupled to silicon, can improve the solar cell resistance to severe negative voltages when the tandem device is properly designed.
3Sun s.r.l. is a company with interest in the production and commercialization of photovoltaic modules. Abstract The reverse bias stability is a key concern for the commercialization and reliability of halide perovskite photovoltaics. Here, the robustness of perovskite-silicon tandem solar cells to r...
A solar cell can become reverse biased (i.e., can operate at a negative voltage) when it produces significantly less current than the other cells that it is connected in series with, for example, in the solar modules.
In practice, the reverse-bias issue is encountered in solar modules under partial shading, where the shaded cell is forced into reverse bias in an attempt to pass the photocurrent of its unshaded and series-connected neighbors.
We experimentally demonstrate that monolithic perovskite/silicon tandem solar cells possess a superior reverse-bias resilience compared with perovskite single-junction solar cells. The majority of the reverse-bias voltage is dropped across the more robust silicon subcell, protecting the perovskite subcell from reverse-bias-induced degradation.
However, we highlighted that the tandem solar cells' resistance to the reverse bias is not universal but depends on the electrical and optical design of the device. In fact, the protection from silicon is effective if the bottom cell features a breakdown voltage in the range of −40 V along with a high shunt resistance.
5 · The reverse-bias resilience of perovskite-silicon tandem solar cells under field conditions—where cell operation is influenced by varying solar spectra and the specifications …
5 Connection to an external load. ... (1.4eV). These higher energy photons will be absorbed by a silicon solar cell, but the difference in energy between these photons and the ... reverse …
Although large reverse biases may damage perovskite devices either directly (as for Figures 2 B, 2E, and 2F) or through Joule heating causing perovskite decomposition, …
In a recent issue of Joule, Xu and co-workers 1 demonstrated that the 2-terminal perovskite/silicon tandem solar cells are phenomenally resilient to reverse bias …
(A) Schematics of aperovskite-silicon tandem solar cell module and astring within themodule thatisshown to consist of series-connected tandem cells with an anti-parallel bypass diode. (B) …
In a recent issue of Joule, Xu and co-workers 1 demonstrated that the 2-terminal perovskite/silicon tandem solar cells are phenomenally resilient to reverse bias …
While perovskite cells typically exhibit early reverse bias breakdown voltages, the serial connection with silicon cells with large shunt resistances and high voltage …
With a reverse bias, a solar cell shows a stronger photovoltaic effect. Better separation and collection of charges increase the current and voltage it produces. This boost …
tinues to grow, resolution of these reverse-bias effects is destined to become increasingly important. Innovative approaches may well be required since the intrinsic stability of these …
Here, the robustness of perovskite-silicon tandem solar cells to reverse bias electrical degradation down to −40 V is investigated. The two-terminal tandem configuration, …
In commercial, silicon (Si) wafer-based modules, reverse-bias-induced degradation is largely mitigated by introducing bypass diodes anti-parallel to substrings of …
In this work, we demonstrate that by employing a monolithic perovskite/silicon tandem structure, the perovskite subcell can be effectively protected by the silicon subcell under reverse bias, …
5 · Cells in a module can become reverse biased, e.g., in a partially shaded cell string, potentially causing irreversible damage. Conventional solutions applied in silicon modules are …
cells possess a superior reverse-bias resilience compared with perovskite single-junction solar cells. The majority of the reverse-bias voltage is dropped across the more robust silicon …
(Figure S2; Table S1).38 Si heterojunction technology was employed for the Si 1-J and bottom solar cells.39 First, we conducted a series of J-V characterizations on the three …
cells possess a superior reverse-bias resilience compared with perovskite single-junction solar cells. The majority of the reverse-bias voltage is dropped across the more robust silicon …
(A) Schematics of aperovskite-silicon tandem solar cell module and astring within themodule thatisshown to consist of series-connected tandem cells with an anti-parallel bypass diode. (B) …
This article identifies the additional challenges faced by perovskite solar cells under reverse-bias operation and outlines strategies for addressing them in terms of both cell …